Kyphoplasty system and method

ABSTRACT

A kyphoplasty system includes various instruments which can be selectively used in a surgical theater (e.g., during a surgical operation on a patient) or a surgical training environment. The kyphoplasty system can include one or more of a kyphoplasty apparatus, a prone table mat, a connector system, a bone introducer needle, and a biopsy device. The kyphoplasty system may also include a training system for use in the training environment.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims priority to U.S. application Ser. No.16/670,548, filed on Oct. 31, 2019, which is a divisional of U.S.application Ser. No. 16/668,818, filed on Oct. 30, 2019 which is adivisional of U.S. application Ser. No. 16/522,478 filed on Jul. 25,2019, which claims the benefit of U.S. Provisional Application Ser. No.62/874,090, filed on Jul. 15, 2019, the contents of these aforementionedapplications being fully incorporated herein by reference. To the extentappropriate, a claim of priority is made to each of the above disclosedapplications.

TECHNICAL FIELD

This document generally relates to kyphoplasty or other interventionalspinal procedures.

BACKGROUND

Kyphoplasty is a minimally invasive surgical procedure for treatment ofpain caused by vertebral body compression fractures. Typically, theprocedure involves insertion of one or more coaxial 8-10 gauge boneintroducer needles under fluoroscopic guidance into one or morefractured vertebral bodies utilizing a bipedicular, unipedicular, orextrapedicular approach. In some approaches, after a bone introducerneedle is in place, the inner portion of the bone introducer needle isremoved and the outer portion of the bone introducer needle remains as aguide and support for the remaining procedure. Through the boneintroducer needle, a drill and curette are utilized for cavity creationin the vertebral body. In many cases, after the cavity is created, thedrill and curette are removed, and a deflated balloon is inserted intothe cavity of the vertebral body. The balloon is then inflated, forexample, by injecting a solution into the balloon, thereby expanding thedrilled cavity into a desired size within the vertebral body. When thecavity is expanded to the desired size, the balloon is deflated andremoved from the vertebral body. Usually in such cases, a bone filler isadvanced into the vertebral body, and the expanded cavity is filled withcement.

SUMMARY

Some embodiments described herein include a kyphoplasty system. Thekyphoplasty system includes a multi-functionality device that simplifiescavity creation and filling processes with improved height restorationof a fractured vertebral body. For example, the kyphoplasty system canbe configured to maintain a desired anatomic height (e.g., after aballoon is inserted to expand a cavity to a desired height) before andduring the delivery of cement to the expanded cavity. Further, in someexamples described herein, the kyphoplasty system can employ aninstrument that is configured to both expand the cavity to the desiredanatomic height (e.g., using a balloon) and also fill the cavity withcement.

Embodiments of the multi-functionality device disclosed herein integratea balloon with a bone filler device, and configured as a single unitwhich can be detachably coupled to a distal end of an elongated shaft ofa kyphoplasty device. The multi-functionality device can be introducedinto a fractured vertebral body by advancing the shaft of thekyphoplasty device mounting the multi-functionality device at the distalend, into the fractured vertebral body. The shaft with themulti-functionality device can be introduced through, for example, abone introducer needle being inserted into the fractured vertebral body.While inserted into the vertebral body, the multi-functionality devicethen advantageously allows both inflating the balloon and injecting bonefilling substance into the fractured vertebral body. Such ballooninflation and bone filler injection can be performed sequentially,simultaneously, or alternatingly while the multi-functionality deviceremains in the vertebral body.

In some examples, the multi-functionality device is a dual port deviceincluding a body and an inflatable balloon attached around the body. Thebody can include a first passage for delivering a balloon inflationsubstance into the balloon for inflation, and a second passage fordelivering a bone filling substance into a compressed or fracturedvertebral body. The body can be detachably coupled to a distal end of anelongate shaft of a kyphoplasty device, which can inserted through abone introducer needle to arrange the dual port device in place withinthe vertebral body. The shaft can include first and second channels thatcan be in fluid communication with the first and second passages of thedual port device when the dual port device is mounted to the distal endof the shaft. The balloon inflation substance can be delivered throughthe first channel of the shaft and the first passage of the dual portdevice and further into the balloon. The bone filling substance can bedelivered through the second channel of the shaft and the second passageof the dual port device and further into the vertebral body. Forexample, when the dual port device is placed within the vertebral body,the balloon inflation substance can be injected into the balloon throughthe first channel of the shaft and the first passage of the dual portdevice until the balloon is inflated to secure a desired height in thevertebral body. While the balloon remains inflated to maintain thedesired height in the vertebral body, the bone filling substance can beinjected into, and at least partially fill in, the vertebral bodythrough the second channel of the shaft and the second passage of thedual port device. Once the vertebral body is filled with the bone filingsubstance, the shaft is decoupled from the dual port device and removedthrough the bone introducer needle.

In some examples, the dual port device disclosed herein includes one ormore one-way valves arranged in the first passage of the dual portdevice and/or in an interface between the balloon and the first passageof the dual port device. The one-way valves are configured to allow flowof the balloon inflation substance into the balloon while preventingbackflow in the opposite direction.

The balloon can be configured to form various inflated shapes, such asspheres, cylinders, cubes, diamonds, prisms, and other multifaceted 3-Dshapes. For example, multifaceted shapes, such as diamond shapes, canincrease surface area contact. In addition or alternatively, thekyphoplasty apparatus can include multiple sets of shafts and dual portdevices that are operated simultaneously or in sequence.

Some embodiments of the technologies described herein include aconnection system that allows compact, easy, and reliable engagementbetween instruments in the kyphoplasty system or other interventionalprocedures. For example, the connection system can be sized sufficientlysmall and provide minimum interference between different sets ofinstruments that are arranged together in a dense area where manyinstruments are introduced into the patient. That way, multipleinstruments may be used in a small area of the patient body at the sametime while also reducing obstructions in the working space locatedexterior to the patient. For example, the kyphoplasty system in someembodiments herein may use a plurality of bone introducer needles toaccess a plurality of vertebral bodies that are closely arranged, andeach bone introducer needle may include a needle (e.g., a cannula) and ahead (e.g., an inner connector) fixed to an end of the needle. The headof the bone introducer needle can be releasably coupled (e.g., snap-fit)to an exterior connector so that a user (e.g., a physician) may graspthe exterior connector to push the bone introducer needle into avertebral body or insert other instruments through the bone introducerneedle by engaging the exterior connector mounting such otherinstruments with the head of the bone introducer needle. Once the boneintroducer needle is in place or such other instruments are arrangedthrough the bone introducer needle, the exterior connector can beremoved from the head of the bone introducer needle. Preferably, thehead of the bone introducer needle and/or each exterior connector aresized sufficiently small and provide minimum interference betweendifferent sets of instruments that are arranged together in a dense areawhere many instruments are introduced into the patient.

Embodiments of the connection system disclosed herein includes a firstconnector mounted to a first component, and a second connector mountedto a second component. In some examples, the first component may includea bone introducer needle, a biopsy needle, other types of needles,cannulas, drill tips, a kyphoplasty apparatus (e.g., the shaft mountingthe multi-functionality device), and other suitable instruments forkyphoplasty. The second connector can be connected to a tool forcontrolling the second component. For example, the second connector isfixed to, or integrally formed with, a tool. Alternatively, the secondconnector can be removably engaged with a coupling feature (e.g., asocket) of a tool. Such a tool can include a manual handle grip, amanual or electrical drill, and other suitable manual or electricaltools. In some examples, the first connector (e.g., an inner connector)is at least partially received within the second connector (e.g., anouter connector), and releasably coupled with the second connector. Thefirst and second connectors are shaped to prevent the first componentfrom radially moving relative to the second component. The connectionsystem can further includes a spring clasp that prevents an axialmovement of the first connector relative to the second connector. Thefirst and second connectors can be configured to have small form factorsthat provide sufficient spacing between adjacent components when thecomponents are introduced into the patient and/or arranged in place.

In particular embodiments, the spring clasp of the connection system canbe configured to allow the second connector (e.g., an outer connector)to connect with the first connector (e.g., an inner connector) by simplyinserting the first connector to the second connector. For example, thespring clasp is pivotally arranged in the second connector and includesa hook portion. The spring clasp is biased to a hooked position. As thefirst connector is inserted into the second connector, the firstconnector engages with the spring clasp of the second connector andpivots the spring clasp against the biasing force until the spring claspreturns to the hooked position where the hook portion of the springclasp snaps in a corresponding notch defined on the first connector. Inaddition or alternatively, the spring clasp can be configured to releasethe first connector from the second connector by simply pushing aportion of the spring clasp away from the hooked position.

Embodiments of the connection system disclosed herein include aninstrument length extension device for the connection system. Theinstrument length extension device is configured to extend a length ofan instrument used in kyphoplasty. In some examples, the instrumentlength extension device includes an extension shaft having a first endand an opposite second end. The first end of the extension shaft mountsa first extension connector, and the second end of the extension shaftmounts a second extension connector. The first extension connector isconfigured similar to the first connector (e.g., an inner connector) ofthe connection system and engageable with the second connector (e.g., anouter connector) of the connection system. The second extensionconnector is configured similar to the second connector (e.g., the outerconnector) of the connection system and engageable with the firstconnector (e.g., the inner connector) of the connection system. Theinstrument length extension device can effectively extend a length ofthe first component (e.g., a needle) by simply coupling the secondextension connector of the extension device to the first connector ofthe first component, and by simply coupling the first extensionconnector of the extension device to the second connector connected(e.g., fixed or removably engaged) to a tool (e.g., a handle grip ordrill).

Embodiments of the connection system disclosed herein include aninstrument spacer configured as a sleeve with a predetermined axiallength. The instrument spacer can be slid around an instrument (e.g., abone biopsy needle, a drill bit, etc.) before the instrument is insertedinto a bone introducer needle. The instrument spacer can be slidablypositioned around the instrument and arranged between the firstconnector (e.g., an inner connector) of the bone introducer needle andthe second connector (e.g., an outer connector) coupled to a tool (e.g.,a drill handle). As the instrument (e.g., a bone biopsy needle or adrill shaft) moves toward a vertebral body, the instrument spacer canstop the instrument from moving further axially by engaging with thefirst connector of the bone introducer needle at one axial end and withthe second connector coupled to the tool at the opposite axial end.

Some embodiments of the technologies described herein include a pronemat that allows a patient to comfortably lie flat and prone duringkyphoplasty and other procedures which require patients to remain in aprone position. The prone mat is configured to be lightweight andportable so as to be easily transportable between different rooms andplaced on any type of existing tables and beds. In addition, the pronemat can be configured to be foldable to reduce its size for convenienttransportation.

Embodiments of the prone mat disclosed herein include a body portion anda head portion connected to the body portion. The body portion isconfigured to support at least a portion of a patient's trunk (e.g.,torso). In addition, the body portion can be configured to furthersupport lower limbs (e.g., legs). The head portion extends from the bodyportion and is configured to support a patient's head. The head portionincludes a rim portion that at least partially defines an opening forexposing at least a portion of the patient's face (including eyes, nose,and mouth) while supporting the patient's head when the patient lies ina face-down position. The head portion includes a vertical supportportion configured to position the rim portion away from a bottom levelwhere the body portion is seated, and thus provide a space between therim portion and the bottom level so that the patient's face does nottouch the bottom level and is sufficiently raised from the bottom level.In addition, the head portion includes one or more tube notchesconfigured to route one or more tubes (e.g., oxygen tubes) around thepatient's head during procedures.

Some embodiments of the technologies described herein include anintroducer needle with a backflow prevention device. Embodiments of thebackflow prevention device of the introducer needle include a one-wayvalve arranged in a hub of the introducer needle. For example, theintroducer needle includes a needle and a hub mounted at an end of theneedle. The hub defines an interior space being in fluid communicationwith a canal of the needle, and further includes a one-way valvearranged within the interior space and configured to prevent backflow ofblood or body fluids (e.g., flow in a direction away from a patient'sbody) when, for example, a biopsy needle is removed from the patient'sbody through the introducer needle. In addition, the hub can provides acoupling mechanism (e.g., a luer lock) for an instrument (e.g., acoaxial biopsy device).

Also, some embodiments of the technologies described herein includes abiopsy device (e.g., biopsy gun) configured to be coupled with anintroducer needle without an additional locking device. In someexamples, the introducer needle includes a hub with a first luer lockconnector (e.g., a female luer lock connector), and the biopsy deviceincludes a device body integrating a second luer lock connector (e.g., amale luer lock connector). As the biopsy device is at least partiallyinserted into the hub of the introducer needle, the second luer lockconnector of the biopsy device can be engaged with the first luer lockconnector of the hub, so that the device body of the biopsy device issecured to the hub of the introducer needle without a separate luer lockring.

Optionally, the technologies described herein can include aradiation-free interventional spinal training system for kyphoplasty andother interventional procedures. Embodiments of the training systeminclude one or more individual vertebral body models made of atransparent material that is penetrable by needles. For example,transparent vertebral body models can visualize kyphoplasty needles,balloons, and bone filling substances inside the models. In addition oralternatively, the vertebral body models can be configured to make anoutside part (e.g., crust) harder than an inside part, therebysimulating tactile experience of touching needles to spinal bones. Inaddition or alternatively, the vertebral body models include markers(e.g., lines, dots, circles, etc.) indicative of educational anatomiclandmarks to facilitate correct needle placement.

Additionally or alternatively, the training system includes a spinalcanal model which can be made of a solid rod. The spinal canal model isconfigured to connect a series of vertebral body models. The vertebralbody models can be individually engaged with and removed from the spinalcanal model. Each of the vertebral body models can be replaced ifdamaged during simulated procedure. The spinal canal model can beconfigured to rest on a table top. The spinal canal model can be made ofa transparent material to allow visualization of bone needles inside avertebral bone.

Additionally or alternatively, the training system includes a patientbody model that simulates a patient body. The patient body model can bemade of a transparent material (e.g., silicon) to allow visualization ofneedles approaching the vertebral body models. The patient body model isconfigured to fit over the spinal canal model engaging one or morevertebral body models, and rest on the rest top on which the spinalcanal model also rests. The patient body model can be made of a materialthat provides tactile simulation of advancing needles through paraspinalsoft tissues.

Additionally or alternatively, the training system includes a camerasupport structure that simulates a C-arm machine of kyphoplasty. Thecamera support structure is configured to movably support a camera withrespect to the patient body model and/or the spinal canal model engagingwith the vertebral body models. The camera support structure can includean arc rail frame extending around the patient body model and slidablyengaging with a camera bracket for mounting a camera capable ofcapturing videos and/or still images. Examples of such a camera includea digital camera, a mobile device (e.g., a smartphone, a tablet, etc.)including a digital camera, and other image capturing devices. Thecamera bracket is configured to be mounted to the arc rail frame andslide along the arc rail frame above the patient body model whilecapturing a video or images of training procedures with the patient bodymodel, the spinal canal model, and/or the vertebral body models. Thevideo or images taken by the camera can be transmitted to a displaydevice (e.g., a display screen or monitor) and displayed on the displaydevice so that users (e.g., trainers and trainees) can watch theprocedures in real-time as they perform the procedures, just asphysicians can monitor a surgical site (e.g., the inside of a vertebralbody) through a C-arm system (including a display screen) during theprocedure.

In addition or alternatively, the arc rail frame of the camera supportstructure is configured to be pivotable in a cranial-caudal plane, justas a C-arm system is maneuvered during interventional spine procedures.In addition or alternatively, the camera support structure is configuredto be movable along a cranial-caudal direction. The camera supportstructure can be configured to be manually and/or remotely controlled tomove in different planes of movement.

Particular embodiments described herein include a kyphoplasty apparatus.The apparatus includes a multi-functionality head and an elongate shaft.The multi-functionality head includes a body including a first conduitand a second conduit, and an inflatable balloon device attached to thebody and configured to be in fluid communication with the first conduitof the body. The elongate shaft has a distal end and a proximate end.The shaft is configured to detachably attach the body of themulti-functionality head at the distal end. The shaft includes a bonefiller channel and a balloon fluid channel. The bone filler channel isconfigured to be in fluid communication with the second conduit of themulti-functionality head and deliver a bone filler into a vertebral bodythrough the second conduit. The balloon fluid channel is configured tobe in fluid communication with the first conduit of themulti-functionality head and deliver a balloon fluid into the balloondevice through the first conduit to inflate the balloon device withinthe vertebral body.

In some implementations, the system can optionally include one or moreof the following features. The body may be configured to snap-fit thedistal end of the shaft. The body may include a thread portionconfigured to be screwed to the distal end of the shaft. The secondconduit may extend through a length of the body, and the first conduitis arranged around the second conduit. The balloon device may beattached to an exterior surface of the body. The balloon fluid channelmay be arranged around the bone filler channel. The proximate end of theshaft may be configured to fluidly connect to a bone filler source and aballoon fluid source. The bone filler source may be configured to be influid communication with the bone filler channel. The balloon fluidsource may be configured to be in fluid communication with the balloonfluid channel. The multi-functionality head may further include a firstvalve disposed in the first conduit and configured to prevent a backflowof the balloon fluid. The first valve may be a conical one-way valve.The multi-functionality head may further include a balloon portconfigured to make fluid communication between the first conduit and theballoon device, and a second valve configured to selectively open andclose the balloon port and prevent a backflow of the balloon fluidthrough the balloon port. The second valve may include at least one of aone-way flap valve or a one-way sleeve valve.

Particular embodiments described herein include a method for akyphoplasty procedure. The method includes inserting amulti-functionality head into a vertebral body, the multi-functionalityhead connected to a shaft; inflating a balloon device of themulti-functionality head by delivering a balloon fluid to the balloondevice through a balloon fluid channel of the shaft and a first conduitof the multi-functionality head; injecting a bone filler to thevertebral body through a bone filler channel of the shaft and a secondconduit of the multi-functionality head; disconnecting the shaft fromthe multi-functionality head; and removing the shaft from the vertebralbody.

In some implementations, the system can optionally include one or moreof the following features. The method may further include, prior toinserting the multi-functionality head into the vertebral body,inserting a bone introducer needle into the vertebral body, wherein themulti-functionality head is inserted into the vertebral body through thebone introducer needle. The method may further include, prior toinserting the multi-functionality head into the vertebral body,inserting a bone introducer needle with an inner stylette toward ananterior aspect of the vertebral body using image guidance; removing theinner stylette from the bone introducer needle; coaxially inserting theshaft coupled with the multi-functionality head into the bone introducerneedle; and retracting posteriorly the bone introducer needle over theshaft with the coupled multi-functionality head such that themulti-functionality head is positioned at least partially uncoveredinside the vertebral body. The method may further include inserting abone biopsy needle into the vertebral body; controlling the bone biopsyneedle to remove a bone sample; and removing the bone biopsy needle fromthe vertebral body. The method may further include inserting a bonedrill bit into the vertebral body; controlling the bone drill bit tocreate a cavity in the vertebral body; and removing the bone drill bitfrom the vertebral body. The method may further include inserting acavity curette into the vertebral body; controlling the cavity curetteto remove debris in the cavity; and removing the cavity curette from thevertebral body. The multi-functionality head may be configured to bescrewed to the shaft. The multi-functionality head may include aspring-biased footplate configured to be pressed against an innersurface of the bone introducer needle. The balloon device may beattached to an exterior surface of the body. The multi-functionalityhead may include a first valve disposed in the first conduit andconfigured to prevent a backflow of the balloon fluid. Themulti-functionality head may include a balloon port configured to makefluid communication between the first conduit and the balloon device,and a second valve configured to selectively open and close the balloonport and prevent a backflow of the balloon fluid through the balloonport.

Particular embodiments described herein include a multi-functionalityhead for a kyphoplasty apparatus. The head includes a body and aninflatable balloon device. The body includes a coupling portionconfigured to be detachably attached to a shaft; a first conduitconfigured to be in fluid communication with a balloon fluid channel ofthe shaft to deliver a balloon fluid; and a second conduit configured tobe in fluid communication with a bone filler channel of the shaft todeliver a bone filler into a vertebral body. The inflatable balloondevice is attached to the body and configured to be in fluidcommunication with the first conduit of the body. The inflatable balloondevice is inflated by the balloon fluid delivered into the balloondevice through the first conduit of the body.

Particular embodiments described herein include a connection system foran interventional surgical procedure. The connection system may includea first connector and a second connector. The first connector includes afirst body and a notch. The first body is attached to a bone introducerneedle and includes an instrument passage open to a lumen of the boneintroducer needle. The notch is provided in the first body. The secondconnector includes a second body and a spring clasp. The second body isattached to a surgical instrument (e.g., a driving tool) and includes acavity configured to receive at least partially the first body of thefirst connector. The spring clasp is provided in the second body andconfigured to releasably engage with the notch of the first body whenthe second body receives the first body.

In some implementations, the system can optionally include one or moreof the following features. The spring clasp may include a hook portionconfigured to snap in the notch of the first body of the firstconnector; and a spring element arranged to biase spring clasp to ahooked portion in which the hook portion snaps in the notch of the firstbody of the first connector when the first connector is received in thecavity of the second body. The spring clasp may include a releaseportion configured to release the hook portion from the notch. Thespring clasp may be pivotally coupled to the second body. The releaseportion may be arranged opposite to the hook portion with a pivot axisof the spring clasp therebetween. The second body of the secondconnector may be configured to be releasably attached to a driving tool.The driving tool may be operable to control the surgical instrument. Thedriving tool may include a socket configured to fit the second body ofthe second connector. The surgical instrument may be one of a bonebiopsy needle, a bone drill, and a kyphoplasty apparatus. Thekyphoplasty apparatus may include a multi-functionality head and anelongate shaft. The head may include a body including a first conduitand a second conduit, and an inflatable balloon device attached to thebody and configured to be in fluid communication with the first conduitof the body. The elongate shaft has a distal end and a proximate end.The shaft may be configured to detachably attach the body of themulti-functionality head at the distal end. The shaft may include a bonefiller channel and a balloon fluid channel. The bone filler channel maybe configured to be in fluid communication with the second conduit ofthe multi-functionality head and deliver a bone filler into a vertebralbody through the second conduit. The balloon fluid channel may beconfigured to be in fluid communication with the first conduit of themulti-functionality head and deliver a balloon fluid into the balloondevice through the first conduit to inflate the balloon device withinthe vertebral body. The connection system may further include aninstrument length extension device configured to engage between thefirst connector and the second connector. The instrument lengthextension device may include an extension shaft including a channel; afirst extension connector mounted to a first end of the extension shaftand configured to be at least partially inserted into the cavity of thesecond body of the second connector; and a second extension connectormounted to a second end of the extension shaft and configured to atleast partially receive the first body of the first connector. Thesurgical instrument may extend through the channel of the extensionshaft and the bone introducer needle when the instrument lengthextension device is engaged between the first connector and the secondconnector. The first extension connector may include a first extensionbody including a passage fluidly connected to the channel of theextension shaft; and a notch provided in the first extension body andconfigured to engage with the spring clasp of the second connector. Thesecond extension connector may include a second extension body includinga port fluidly connected to the channel of the extension shaft andfurther including an extension cavity configured to receive at leastpartially the first body of the first connector; and a spring claspprovided in the second extension body and configured to releasablyengage with the notch of the first connector when the second extensionbody receives the first body of the first connector. The connectionsystem may further include an instrument spacer configured to be slidaround the surgical instrument between the first connector and thesecond connector. The instrument spacer may include a sleeve. Theconnection system may further include a set of instrument spacers havingdifferent axial lengths, each instrument spacer configured to be slidaround the surgical instrument between the first connector and thesecond connector.

Particular embodiments described herein include a patient positioningmat. The mat includes a body portion and a head portion. The bodyportion is configured to support at least a portion of a patient's bodyin a prone position. The head portion is connected to the body portionand includes a rim portion supporting a patient's head and defining anopening for exposing a patient's face in the prone position, and asupport portion configured to provide a space between the rim positionand a surface on which the body portion is set.

In some implementations, the system can optionally include one or moreof the following features. The head portion may include a tube notchprovided in the rim portion and configured to route a tube around thepatient's head. The body portion and the head portion may be foldable.

Particular embodiments described herein include an introducer needleincluding a needle having a canal; a hub connected to the needle andproviding an interior space being in fluid communication with the canalof the needle; and a valve arranged within the interior space of the huband configured to prevent a backflow of a fluid from a patient's body

Particular embodiments described herein include a biopsy deviceincluding a biopsy needle, and a biopsy gun coupled to the biopsy needleand including a first luer lock connector. The first connector isconfigured to engage with a second connector provided in a boneintroducer needle to releasably secure the biopsy gun to the boneintroducer needle.

In some implementations, the system can optionally include one or moreof the following features. The first connector may be a male luer lockconnector, and the second connector may be a female luer lock connector

Particular embodiments described herein include an interventional spinaltraining system including a transparent vertebral body model configuredto be similar to a vertebral body; a spinal canal model including a rodand a stand, the rod configured to removably engage the vertebral bodymodel, and the stand configured to support the rod against a surface;and a transparent patient body model configured to fit over the spinalcanal model engaging the vertebral body model.

In some implementations, the system can optionally include one or moreof the following features. The vertebral body model may be made of apenetrable material. The patient body model may be made of a penetrablematerial. The vertebral body model may be made of a silicone. Thepatient body model may be made of a silicone. The interventional spinaltraining system may further include a camera support device configuredto movably support an image capturing device around the patient bodymodel. The camera support device may include a rail frame extendingaround the patient body model. and a camera bracket slidably engagedwith the rail frame and configured to mount an image capturing device.The rail frame may be shaped to be arc around the patient body model.The rail frame may be configured to be pivotable in a cranial-caudalplane. The interventional spinal training system may further include adisplay device configured to receive images from the image capturingdevice and display the images.

The apparatuses, systems, devices, and techniques described herein mayprovide one or more of the following advantages. Some embodimentsdescribed herein include a kyphoplasty system that usesmulti-functionality device providing both balloon inflation and bonefilling functionalities together in a single unit, thereby simplifying akyphoplasty procedure. The dual port device improves height restorationof a fractured vertebral body by the balloon inflation, and permits forthe vertebral body to be filled with the bone filler without losing therestored height.

Further, some embodiments described herein include a connection systemfor surgical instruments in a kyphoplasty procedure or other surgicalprocedures. The connection system includes a set of connectors that havesmall foam factors, thereby allowing minimum interference betweendifferent sets of instruments that are arranged together in a dense areawhere many instruments are introduced into the patient. Further, theconnectors are configured to be mated with a simple coupling mechanism,thereby allowing easy and reliable engagement between instruments duringthe procedure. Some embodiments described herein include variousinstruments, such as bone introducer needles, that incorporate valves,thereby preventing backflow of blood or other body fluids through theinstruments. Further, some embodiments described herein include variousinstruments that integrate locking devices configured to easily lock oneinstrument to another without a separate coupling device.

Moreover, some embodiments of the kyphoplasty system provide a patientpositioning mat that is lightweight and portable and can be easily setup on an existing table or bed to allow a patient to comfortably lie ina prone position during kyphoplasty or other procedures.

Also, some embodiments described herein include an interventional spinaltraining system for kyphoplasty and other procedures. The trainingsystem can include simulated vertebral bodies, a simulated spinal canal,and a simulated patient body, so that a radiation-free environment iscreated for interventional training.

The details of one or more implementations are set forth in theaccompanying drawings and the description below. Other features andadvantages will be apparent from the description and drawings, and fromthe claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example kyphoplasty system.

FIG. 2 schematically illustrates an example kyphoplasty apparatus.

FIG. 3 schematically illustrates an example multi-functionality head.

FIG. 4 illustrates an example valve in the multi-functionality head ofFIG. 3 .

FIG. 5 illustrates that the multi-functionality head is inserted into acompressed or fractured vertebral body.

FIG. 6 illustrates that a balloon device of the multi-functionality headis in an inflated status, and a bone filler is delivered into avertebral body.

FIG. 7 illustrates that the bone filler fills in the vertebral body.

FIG. 7A schematically illustrates an example multi-functionality head.

FIG. 8 illustrates an example connection system in the kyphoplastysystem.

FIG. 9A is a side cross sectional view of an example spring clasp in afirst position.

FIG. 9B is a side cross sectional view of the spring clasp in a secondposition.

FIG. 9C is a side cross sectional view of the spring clasp in a thirdposition.

FIG. 10A is a side schematic view of an example spring element.

FIG. 10B illustrates an example arrangement of the spring element in thespring clasp 650.

FIG. 10C is a side view of an example body of the spring clasp.

FIG. 10D is a top view of the body of the spring clasp.

FIG. 10E is a front view of the body of the spring clasp.

FIG. 10F is a schematic front view of the spring clasp in a hookposition.

FIG. 10G is a schematic rear view of the spring clasp in the hookposition.

FIG. 10H is a schematic front view of the spring clasp in a transitionposition.

FIG. 10I is a schematic rear view of the spring clasp in the transitionposition.

FIG. 10J is a schematic top view of the spring clasp coupled to aconnector.

FIG. 11A illustrates an example kyphoplasty procedure in which a boneintroducer needle is inserted into a compressed vertebral body.

FIG. 11B illustrates an example kyphoplasty procedure in which a bonebiopsy needle is introduced into the vertebral body.

FIG. 11C illustrates an example kyphoplasty procedure in which a bonedrill bit is introduced into the vertebral body.

FIG. 11D illustrates an example kyphoplasty procedure in which a cavitycurette is introduced into the vertebral body.

FIG. 11E illustrates an example kyphoplasty procedure in which akyphoplasty apparatus is introduced into the vertebral body.

FIG. 11F illustrates an example kyphoplasty procedure in which a ballooninflation fluid is delivered to inflate a balloon device.

FIG. 11G illustrates an example kyphoplasty procedure in which a bonefiller is delivered into the vertebral body.

FIG. 11H illustrates an example kyphoplasty procedure in which a shaftis removed from the vertebral body.

FIG. 11I illustrates an example kyphoplasty procedure in which the boneintroducer needle is removed from the restored vertebral body.

FIG. 12A illustrates an example kyphoplasty procedure that includes asingle multi-functionality head with a spherical inflated balloon.

FIG. 12B illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 12A.

FIG. 12C illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 12A.

FIG. 12D illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 12A.

FIG. 13A illustrates an example kyphoplasty procedure that includes aset of multi-functionality heads with a spherical inflated balloon.

FIG. 13B illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 13A.

FIG. 13C illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 13A.

FIG. 13D illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 13A.

FIG. 14A illustrates an example kyphoplasty procedure that includes asingle multi-functionality head with a cubic inflated balloon.

FIG. 14B illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 14A.

FIG. 14C illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 14A.

FIG. 14D illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 14A.

FIG. 15A illustrates an example kyphoplasty procedure includes a set ofmulti-functionality heads with a prism or diamond inflated balloon.

FIG. 15B illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 15A.

FIG. 15C illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 15A.

FIG. 15D illustrates an example kyphoplasty procedure with themulti-functionality head of FIG. 15A.

FIG. 16 illustrates an example instrument length extension device.

FIG. 17 illustrates an example instrument spacer.

FIG. 18A is a schematic top view of an example patient positioning mat.

FIG. 18B is a schematic side view of the patient positioning mat of FIG.18A.

FIG. 18C is a schematic front view of the patient positioning mat ofFIG. 18A.

FIG. 18D is a schematic front view of the patient positioning mat ofFIG. 18A with a tubing arranged.

FIG. 19A is a side view of an example bone introducer needle.

FIG. 19B is a top view of the bone introducer needle of FIG. 19A.

FIG. 19C is a schematic side cross sectional view of the bone introducerneedle engaging an example biopsy device.

FIG. 20 is a schematic side cross sectional view of an example biopsydevice.

FIG. 21 is a schematic perspective view of an example interventionalspinal training system.

FIG. 22 is a cross sectional view of the training system of FIG. 21 .

FIG. 23 is a top view of the training system of FIG. 21 .

FIG. 24 is a schematic perspective view of an example spinal canal modelwith example vertebral body models.

FIG. 25A is a schematic top view of an example vertebral body model.

FIG. 25B is a schematic side view of the vertebral body model of FIG.25A.

FIG. 25C is a schematic bottom view of the vertebral body model of FIG.25A.

FIG. 26A is a schematic front view of the interventional spinal trainingsystem with an example image capturing system.

FIG. 26B is a schematic top view of the interventional spinal trainingsystem of FIG. 26A.

FIG. 26C is a schematic side view of the interventional spinal trainingsystem of FIG. 26A.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

FIG. 1 illustrates an example kyphoplasty system 100. The kyphoplastysystem 100 includes various features which can be selectively used in asurgical theater 102 (e.g., during a surgical operation on a patient, ina surgical training environment 104, or both. For example, thekyphoplasty system 100 can include a kyphoplasty apparatus 110 and aprone table mat 130. Although not shown in FIG. 1 , the kyphoplastysystem 100 can further include one or more of a connector system 600(FIGS. 8, 9A-9C, 10A-10J, 11A-11I, 16, and 17 ), a bone introducerneedle 940 (FIG. 19A), and a biopsy device 950 (FIG. 19B), as describedbelow. Some or all of the kyphoplasty apparatus 110, the connectorsystem 600, the prone table mat 130, the bone introducer needle 940, andthe biopsy device 950 can be selectively used in a surgical theater 102or in a training environment 104. Optionally, the kyphoplasty system 100can include a training system 160 for use in the training environment104. The training system 160 can be used with or without one or more ofthe apparatus 110, the connector system 600, the prone table mat 130,the bone introducer needle 940, and the biopsy device 950.

In the surgical theater 102, the kyphoplasty system 100 can be used withan image scanner 180, such as a C-arm machine, and a display device 182configured to receive images (e.g., still and/or video images) from theimage scanner 180 and display them to assist a practitioner (e.g., asurgeon) with the procedure.

In the training environment 104, the training system 160 is set up andpermits for users (e.g., trainers and trainees) to practice kyphoplastyor other interventional spinal surgical procedures. The trainingenvironment 104 may or may not be set up similarly to an operating room.The training environment 104 can include a display device 184 configuredto receive images (e.g., still and/or video images) from the trainingsystem 160 and display them to assist users with the simulatedprocedures.

The kyphoplasty apparatus 110 includes a multi-functionality device anda shaft detachably attached to the multi-functionality device, which areconfigured to simplify cavity creation and filling processes withimproved height restoration of a fractured vertebral body. Preferably,the kyphoplasty apparatus 110 provides a multi-functionality device thatintegrates a kyphoplasty balloon with a bone filler device in a singleunit which can be detachably coupled to an elongated shaft of akyphoplasty device. An example of the kyphoplasty apparatus 110 isfurther described herein, for example with reference to FIGS. 2-7,11A-11I, 12A-12D, 13A-13D, 14A-14D, and 15A-15D.

The connector system 600 includes a set of connectors configured to bemated to couple separate instruments in compact, easy, and reliableconfigurations during procedures. The connection system 600 can includean instrument length extension device to simply extend a length of aninstrument during procedures. The connection system 600 can include aninstrument spacer configured to simply control a length of an instrumentduring procedures. An example of the connection system 600 is furtherdescribed herein, for example with reference to FIGS. 8, 9A-9C, 10A-10J,11A-11I, 16, and 17 .

The prone table mat 130 can be set up on an existing table or bed andplace a patient in a prone position during procedures. An example of theprone table mat 130 is further described herein, for example withreference to FIGS. 18A-18D.

The introducer needle 940 can include a backflow prevention deviceconfigured to prevent backflow of blood or body fluids through theneedle. An example of the introducer needle 940 is further describedherein, for example with reference to FIGS. 19A-19C.

The biopsy device 950 can be coupled with a introducer needle without anadditional locking device. An example of the biopsy device 950 isfurther described herein, for example with reference to FIGS. 19C and 20.

The training system 160 provides a simple, radiation-free interventionalspinal training system. The training system 160 can be used forkyphoplasty training or other interventional spinal procedure trainings.An example of the training system 160 is further described herein, forexample with reference to FIGS. 21-24, 25A-25C, and 26A-26C.

Referring now to FIGS. 2-7 and 7A, some embodiments of the kyphoplastyapparatus 110 include a multi-functionality head 200 and an elongateshaft 202. The multi-functionality head 200 can be detachably coupled toa distal end 210 of the shaft 202. As shown in FIG. 2 , the shaft 202includes a bone filler channel 220 and a balloon fluid channel 222. Thebone filler channel 220 is configured to deliver a bone filler from afiller source 230 into a cavity 92 in a vertebral body 90. For example,the bone filler channel 220 can extend at least partially along a lengthof the shaft 202 between the distal end 210 and an opposite proximal end212 of the shaft 202. The bone filler channel 220 can be open at thedistal end 210 of the shaft 202 so that the open end of the bone fillerchannel 220 can be arranged in the cavity 92 of the vertebral body 90.Further, the bone filler channel 220 can be connected to the fillersource 230 at the proximal end 212 of the shaft 202. The filler source230 contains a bone filler, such as cement, and can be connected to anactuator 232. The actuator 232 can be controlled by a user (e.g., asurgeon) to deliver the bone filler from the filler source 230 throughthe bone filler channel 220 of the shaft 202 in a controller manner. Theactuator 232 can be of various configurations, such as a handgun thatcan be handled by a user to activate the delivery of the bone fillerfrom the filler source 230.

In addition, the balloon fluid channel 222 is configured to deliver aballoon fluid from a fluid source 240 into a balloon (e.g., a balloondevice 262) of the multi-functionality head 200 attached to the distalend 210 of the shaft 202. For example, the balloon fluid channel 222 canextend at least partially along the length of the shaft 202 between thedistal end 210 and the proximate end 212 of the shaft 202. The balloonfluid channel 222 is configured to create fluid communication betweenthe balloon at the distal end 210 and the fluid source 240 at theproximate end 212. The fluid source 240 contains a balloon fluid, suchas saline, contrast, and/or silicone, cement (identical or similar tobone cement), or other solidifying liquid, and can be actuated by aballoon controller 242. The balloon controller 242 can be controlled bya user (e.g., a surgeon) to deliver the balloon fluid from the fluidsource 240 to the balloon through the balloon fluid channel 222. Theballoon controller 242 can be of various configurations, such as asyringe having a barrel containing the balloon fluid and pumped by aplunger that fits within the barrel.

In the illustrated example, the balloon fluid channel 222 is arranged atleast partially around the bone filler channel 220 in the shaft 202. Inother examples, the balloon fluid channel 222 and the bone fillerchannel 220 can be relatively arranged in other configurations, such asrunning parallel with each other, and/or spirally, at least partiallyalong the length of the shaft 202.

In the illustrated example, the shaft 202 is configured to be connectedto both the filler source 230 (and the actuator 232) and the fluidsource 240 (and the balloon controller 242) together. In other examples,the shaft 202 is configured to be selectively connected to one of thefiller source 230 (and the actuator 232) and the fluid source 240 (andthe balloon controller 242). For example, the proximate end 212 of theshaft 202 is configured to be connected to the fluid source 240 (and theballoon controller 242), and then connected to the filler source 230after the fluid source 240 is removed from the shaft 202.

A bone introducer needle 250 can be used to guide themulti-functionality head 200 and/or the shaft 202 therethrough so thatthey can be inserted through a patient body 94 and arranged in placewithin the cavity 92 of the vertebral body 90.

Referring to FIG. 3 , the multi-functionality head 200 includes bothballooning and bone filler functionalities that are integrated into asingle unit. Optionally, some embodiments the single unit may includemore ports than those illustrated in FIG. 3 , but it is preferred thatthe single unit includes multiple ports so as to provide the dualfunctions of balloon expansion and bone filler insertion (as detailedbelow). The multi-functionality head 200 can include a body 260 and aninflatable balloon device 262 attached to the body 260.

The body 260 is configured as a cylindrical body in the illustratedexample, but can be configured in other shapes in other examples. Thebody 260 extends between a distal body end 272 and a proximate body end274. The proximate body end 274 of the body 260 can be configured to bedetachably attached to the distal end 210 of the shaft 202. For example,the body 260 includes a threaded portion 277 at the proximate body end274, which is configured to be engaged with the distal end 210 of theshaft 202. In the illustrated implementation, the threaded portion 277is provided on an outer surface of the body 260, so that the proximatebody end 274 of the body 260 can be screwed into the distal end 210 ofthe shaft 202. Alternatively, the threaded portion 277 is provided on aninner surface of the body 260 so that the proximate body end 274 of thebody 260 can be threaded over the exterior of the distal end 210 of theshaft 202. The distal end 210 of the shaft 202 may have a feature (e.g.,a thread) corresponding to the threaded portion 277 of the body 260 toensure engagement between the body 260 and the shaft 202. Alternativelyor in addition, the body 260 is configured to be removably connected tothe distal end 210 of the shaft 202, such as using one or morespring-biased footplates 279 (FIG. 7A) or other suitable coupling orfastening mechanisms. Alternatively, the body 260 is configured to bepermanently attached to the distal end 210 of the shaft 202, or madeintegrally with the distal end 210 of the shaft 202.

The body 260 includes a first conduit 276 and a second conduit 278between the distal body end 272 and the proximate body end 274. Thefirst conduit 276 is configured to be in fluid communication with theballoon fluid channel 222 of the shaft 202 when the multi-functionalityhead 200 is attached to the shaft 202, so that the first conduit 276delivers the balloon fluid into the balloon device 262 for inflation.The second conduit 278 is configured to be in fluid communication withthe bone filler channel 220 when the multi-functionality head 200 isattached to the shaft 202, so that the second conduit 278 delivers thebone filler into the vertebral body 90.

In the illustrated example, the second conduit 278 is provided as ahollow central canal extending along the length of the body 260, and thefirst conduit 276 is disposed around the second conduit 278. Otherarrangements are also possible. The body 260 has various sizes. In someimplementations, the body 260 ranges from 5 gauge to 20 gauge. In otherimplementations, the body 260 is around 12 gauge. The second conduit 278has various sizes. In some implementations, the second conduit 278ranges from 7 gauge to 25 gauge. In other implementations, the secondconduit 278 is around 14 gauge. The first conduit 276 can be sizeddepending on the sizes of the body 260 and the second conduit 278. Afiller needle 221 (FIG. 6 ) can be sized similarly to or slightlysmaller than the second conduit 278. In some implementations, the fillerneedle 221 ranges from 7 gauge to 25 gauge. In other implementations,the filler needle 221 is around 14 gauge.

The multi-functionality head 200 can include backflow preventionfeatures. In some implementations, the multi-functionality head 200 caninclude a valve system arranged and configured to allow flow of aballoon fluid into the balloon device 262 while preventing backflow inthe opposite direction. For example, the multi-functionality head 200can include a first valve 280 disposed in the first conduit 276. Thefirst valve 280 can be arranged between the proximate body end 274 ofthe body 260 and a portion of the body 260 in which one or more balloonports 290 are arranged to permit fluid communication between the firstconduit 276 and the balloon device 262. The first valve 280 can be aone-way valve disposed (e.g., conically) around the second conduit 278and configured to allow a balloon fluid to pass through from theproximate body end 274 toward the balloon ports 290 of the body 260,while preventing a backflow of the balloon fluid in the oppositedirection (i.e., from the balloon ports 290 to the proximate body end274). In addition or alternatively, the multi-functionality head 200 caninclude one or more second valves 282 disposed at an interface betweenthe balloon device 262 and the first conduit 276. For example, thesecond valve 282 is arranged at each of the balloon ports 290 andconfigured to selectively open and close the balloon ports 290. Thesecond valve 282 can be a one-way flap valve configured to permit aballoon fluid to flow from the first conduit 276 into the balloon device262 while preventing a backflow in the opposite direction (i.e., fromthe balloon device 262 to the first conduit 276). Other types of one-wayvalves can also be used for the second valve 282, such as a one-waysleeve valve (FIG. 7A).

The balloon device 262 is attached to the body 260 and is configured tobe in fluid communication with the first conduit 276 of the body 260through one or more balloon ports 290. As described herein, the balloonports 290 are open or closed by the second valves 282.

The balloon device 262 is initially deflated and configured to beinflated as it is filled with a balloon fluid flowing in through theballoon ports 290. The balloon fluid can be of various kinds, such assaline, silicone, cement, and other suitable fluids or semi-solidballoon injectate. The balloon device can be configured to form variousinflated shapes, such as spheres, cylinders, cubes, diamonds, prisms,and other multifaceted 3-D shapes. For example, multifaceted shapes,such as diamond shapes, can increase surface area contact. Examples ofsuch inflated shapes are illustrated and described herein, for examplewith reference to FIGS. 12A-12D, 13A-13D, 14A-14D, and 15A-15D.

Referring to FIG. 4 , an example of the second valve 282 can include aflap 402 and a flexible element 404. The flap 402 has a fixed end 406attached to a portion of the body 260 adjacent a balloon port 290, and afree end 408 which can freely move relative to the fixed end 406. Theflap 402 has a flap body 410 extending between the fixed end 406 and thefree end 408. The flap 402 includes an extension portion 412 that canseat on an exterior surface of the body 260 to close the balloon port290. In some implementations, the flap body 410 has a curved (e.g.,concave) shape that is bent toward the interior of the body 260 (andaway from the balloon device 262). Such a curved flap body can help sealthe balloon port 290 when the flap 402 closes the balloon port 290 bythe extension portion 412 seating on the exterior surface of the body260 (Position 1).

The flexible element 404 is configured to bias the flap 402 to a closedposition where the flap 402 closes the balloon port 290, as illustratedin Position 1. The flexible element 404 is configured to provide aspring effect against the flap 402. The flexible element 404 has a fixedend 421 that is fixed at or adjacent the fixed end 406 of the flap 402,and a free end 422 that is arranged above the flap body 410 of the flap402. The free end 422 of the flexible element 404 is configured andarranged to contact with the flap body 410 and apply a force against theflap body 410 being raised away from the balloon port 290, asillustrated in Position 2.

The second valve 282 is initially in a closed position, as illustratedin Position 1, where the flap 420 closes the balloon port 290 of thebody 260 with the extension portion 412 seating on an exterior surfaceof the body 260. The flexible element 404 can be arranged to contact theflap 420 at least at the free end 422 so as to bias the flap 402 to theclosed position.

As illustrated in Position 2, as a balloon fluid flows through the body260 (e.g., the first conduit 276 thereof), the balloon fluid creates aforward pressure that pushes the flap 402 and the flexible element 404away from the balloon port 290, so that the extension portion 412 of theflap 402 is raised against the biasing force of the flexible element404, and a channel is created for the balloon fluid into the balloondevice 262.

At illustrated in Position 3, when the balloon fluid fills the balloondevice 262, the balloon fluid within the balloon device 262 applies apressure against the flap 402 and/or the flexible element 404, therebycausing the flap 420 to close the balloon port 290 and prevent abackflow of the balloon fluid.

Referring to FIGS. 5-7 , an example method includes inserting themulti-functionality head 200 into a compressed or fractured vertebralbody 90. The multi-functionality head 200, which is coupled (e.g., screwthreaded, or other suitable manners) to the distal end 210 of the shaft202, is inserted with the shaft 202 through the bone introducer needle250 that has been placed through the patient's body toward the vertebralbody 90. As described herein, the bone filler channel 220 and theballoon fluid channel 222 of the shaft 202 are in fluid communicationwith the second conduit 278 and the first conduit 276 of themulti-functionality head 200, respectively, when the multi-functionalityhead 200 is attached to the shaft 202. As indicated with arrows in FIG.5 , the balloon fluid 264 can be delivered through the balloon fluidchannel 222 of the shaft 202 and the first conduit 276 of themulti-functionality head 200. The flow of the balloon fluid can open thefirst valve 280 and the second valve 282 so that the balloon fluid canpass through the balloon ports 290 and fill in the balloon device 262,thereby inflating the balloon device 262. As such, when themulti-functionality head 200 is placed within the vertebral body 90, theballoon fluid can be injected into the balloon device 262 through theballoon fluid channel 222 of the shaft 202 and the first conduit 276 ofthe multi-functionality head 200 until the balloon device 262 isinflated to secure a desired height in the vertebral body 90.

Referring to FIG. 6 , the balloon device 262 of the multi-functionalityhead 200 is in an inflated status within the vertebral body 90, and abone filler 266 is now delivered into the vertebral body 90. The bonefiller can be delivered through the bone filler channel 220 of the shaft202 and the second conduit 278 of the multi-functionality head 200 andinto the vertebral body 90. For example, once the balloon device 262 hasbeen inflated to have a desired height within the vertebral body 90, thebone filler can be injected into, and fill in, the vertebral body 90through the bone filler channel 220 of the shaft 202 and the secondconduit 278 of the multi-functionality head 200, as indicated as arrowsin FIG. 6 . In some implementations, a filler needle 221 is introducedthrough the bone filler channel 220 of the shaft 20 and the secondconduit 278 of the multi-functionality head 200, and the bone filler canbe injected through the filler needle 221.

Referring to FIG. 7 , the bone filler 266 fills in the vertebral body 90to restore the vertebral body 90. As illustrated, once the height of thevertebral body 90 is restored, the shaft 202 can be decoupled from themulti-functionality head 200 and removed through the bone introducerneedle 250. For example, the shaft 202 can be removed from themulti-functionality head 200 by unscrewing the distal end 210 of theshaft 202 from the threaded portion 277 of body 260 of themulti-functionality head 200. After the shaft 202 is removed, themulti-functionality head 200 can remain within the restored vertebralbody 90 with the balloon device 262 being inflated.

FIG. 7A illustrates another example kyphoplasty apparatus including anexample multi-functionality head 200A and an example elongate shaft202A. The multi-functionality head 200A is configured similarly to themulti-functionality head 200 with modifications. For example, similarlyto the first valve 280, the multi-functionality head 200A includes afirst valve 280A, which can be a one-way conical valve made of aflexible material (e.g., rubber). As illustrated in FIG. 5 , the firstvalve 280 of the multi-functionality head 200 is illustrated as beingfixed at an outer diameter (i.e., an interior thereof) of the firstconduit 276 and being openable around the second conduit 278. However,the first valve 280A of the multi-functionality head 200 can beconfigured to be fixed around the second conduit 278 (at an edge of thefirst valve 280A close to the proximate body end 274) and openablearound the outer diameter (i.e., an interior thereof) of the firstconduit 276 (at an opposite edge of the first valve 280A close to thedistal body end 272).

The multi-functionality head 200A includes a second valve 282A havingthe same or similar functionality as the second valve 282 of themulti-functionality head 200. However, the second valve 282A can beconfigured in the form of a sleeve (e.g., a one-way sleeve valve) madeof flexible material (e.g., rubber). Similarly to the second valve 282,the second valve 282A in the form of a one-way sleeve valve can be fixedat an edge close to the proximate body end 274 and openable at anopposite end close to the distal body end 272.

The multi-functionality head 200A can include one or more spring-biasedfootplates 279. The footplates 279 can be arranged and configured suchthat their free ends are pressed against the inner surface of the boneintroducer needle 250, thereby being collapsed inside the boneintroducer needle 250, when the bone introducer needle 250 surrounds aportion of the multi-functionality head 200A in which the footplates 279are located. Then, when the bone introducer needle 250 is pulled back,the multi-functionality head 200A becomes unsheathed, and the footplates279 return to their original shape (open or expanded position) by thespring force.

In addition or alternatively to the threaded portion 277, themulti-functionality head 200A can provide a non-threaded structure thatcan detachably couple the head 200A to a shaft 202A. For example, themulti-functionality head 200A is configured for a snap-fit (e.g., snapon/off) with the shaft 202A. The multi-functionality head 200A caninclude water-tight seals 275 at the proximate body end 274 of the head200A, such as at the ends of the first and second conduits 276 and 278at the proximate body end 274 of the head 200A. The multi-functionalityhead 200A can be sealingly snap-fitted to the shaft 202A with the firstand second conduits 276 and 278 being aligned with the balloon fluidchannel 222 and the bone filler channel 220 of the shaft 202A. Further,the multi-functionality head 200A can be simply removed from the shaft202A by, for example, axially pulling the shaft 202A away from themulti-functionality head 200A.

The multi-functionality head 200, 200A can have one, some or all of thethreaded portion 277, the spring-biased footplates 279, and the snap-fitstructure with the water-tight seals 275.

In operation, the multi-functionality head 200A is snap-fitted to theshaft 202A, and the assembly of the head 200A and the shaft 202A isinserted into the bone introducer needle 250 such that the footplates279 are collapsed inside the bone introducer needle 250. Then, the boneintroducer needle 250 and the assembly of the head 200A and the shaft202A are pushed toward a vertebral body until the head 200A ispositioned in a desired location within the vertebral body. Then, thebone introducer needle 250 can be pulled back until the footplates 279of the head 200A are released from the interior of the needle 250. Themulti-functionality head 200A is then positioned at least partiallyunsheathed inside the vertebral body. After the balloon device 262 isinflated and the cavity in the vertebral body is filled with a bodycement, the shaft 202A is pulled back, and in some instances the head200A snap-fitted to the shaft 202A might be moved together with theshaft 202A. However, the movement of the head 200A may be limited by thefootplates 279 when the footplates 279 become abutted with the distalend of the bone introducer needle 250 or other structures of thevertebral body. A further pull-back of the shaft 202A may permit thehead 200A to be detached from the shaft 202A so that the head 200Aremains within the vertebral body.

Referring now to FIG. 8 , some embodiments of the kyphoplasty system 100can include a connection system 600. Preferably, the connection system600 is configured to provide compact, easy, and reliable engagementbetween instruments in the kyphoplasty system or other interventionalprocedures. Although the connection system 600 is primarily described inthe kyphoplasty system 100, it is understood that the connection system600 may be used in other interventional procedures.

The connection system 600 can include a first connector 610 and a secondconnector 620. The first connector 610 and the second connector 620 canbe mounted to a first component 612 and a second component,respectively, and configured to operatively couple the first component612 and the second component. As described herein, the first component612 may include a bone introducer needle, a biopsy needle, other typesof needles, cannulas, drill tips, a kyphoplasty apparatus (e.g., theshaft 202 mounting the multi-functionality device 200), and othersuitable instruments for kyphoplasty. The second connector 620 can becoupled to a tool for controlling the second component. Such a tool caninclude a manual handle grip, a manual or electrical drill, and othersuitable manual or electrical tools. For example, the second connector620 is fixed to a tool, or integrally formed with a tool. Alternatively,the second connector 620 can be removably engaged with a tool. Forexample, a tool, such as a drill, has a socket configured tonon-rotatably engage with the second connector 620. In some embodiments,the second connector 620 can be directly inserted into a socket of atool. Alternatively, when the shape of the second connector 620 is notcompatible (e.g., not complementary) with a socket of a tool (e.g., whenthe exterior shape of the second connector 620 has a rectangular crosssection while the socket has a hexagonal cross sectional shape), anadapter (e.g., an adapter having a rectangular cross sectional interiorto receive the second connector, and having a hexagonal cross sectionalexterior to engage with the socket) can be used to be disposed betweenthe second connector 620 and the socket of the tool.

As described herein, for example, the second connector 620 that may bepart of a tool, such as a manual handle or an electronic drill, can bereleasably engaged with (e.g., secured onto) the first connector 620that mounts an instrument, such as a bone introducer needle, a biopsyneedle, a drill, a kyphoplasty apparatus, etc., so that user's operationor manipulation of the tool is translated to the instrument mounted tothe first connector 620.

The first connector 610 can be configured to at least partially insertwithin the second connector 620 and releasably couple with the secondconnector 620. For example, the second connector 620 has a cavity 624configured to correspond to at least a portion of an exterior shape ofthe first connector 610 so that the first connector 610 is at leastpartially received within the cavity 624 of the second connector 610. Insome implementations, the first connector 610 can include a connectorport 614 that is open at a mating side 616 of the first connector 610and provides an instrument passage 618 into a lumen 613 of the firstcomponent 612 attached at the other side of the mating end 616. Thisconfiguration can be used when the first component 612 mounted to thefirst connector 610 is a bone introducer needle or other types ofneedles or lumens for receiving another instrument. In otherimplementations, the first connector 610 can have a closed end at themating side 616 (without a connector port 614).

In this depicted example, the first connector 610 and the secondconnector 620 can be referred to as an inner connector and an outerconnector, respectively. The first and second connectors 610 and 620 aresized to have small form factors with respect to the first and secondcomponents, thereby providing sufficient spacing between different setsof instruments (e.g., the coupled first and second components) which areintroduced into the patient and/or arranged in place.

The first connector 610 and the second connector 620 can be configuredto be at least partially complimentary to prevent radial and/or axialmovements of the first component 612 (and the first connector 610)relative to the second connector 620 when they are coupled. The firstconnector 610 can be configured to at least partially fit into thecavity 624 of the second connector 620 so that the first connector 610does not substantially rotate within the second connector 620. Forexample, the exterior of the first connector 610 is shaped to be a cube,rectangular prism, or other polygonal prisms, and the cavity 624 of thesecond connector 620 can have an interior shape corresponding to theexterior of the first connector 610 so that the first connector 610 doesnot rotate about the second connector 610 when inserted into the cavity624 of the second connector 610

The connection system 600 can include an axial lock to prevent an axialmovement of the first connector 610 relative to the second connector 620when engaged with the second connector 620. For example, the secondconnector 620 includes a spring clasp 650 configured to releasablyengage with a notch 651 of the first connector 610. An example of theaxial lock is further described with reference to FIGS. 9A-9C and10A-10J.

Referring to FIGS. 9A-9C, an example of the axial lock can include thespring clasp 650. FIG. 9A is a side cross sectional view of an examplespring clasp of the first connector in a first (initial, released)position prior to engaging with the second connector. FIG. 9B is a sidecross sectional view of the spring clasp in a second (transitional)position as the second connector is inserted into the first connector.FIG. 9C is a side cross sectional view of the spring clasp in a third(final, engaged) position after the second connector is inserted intothe first connector.

The spring clasp 650 can be disposed in the second connector 620 and isconfigured to allow the second connector 620 to connect with the firstconnector 610 by simply inserting the first connector 610 to the secondconnector 620. For example, the spring clasp 650 is pivotally arrangedin the second connector 620 and includes a hook portion 652. Asillustrated in FIG. 9A, the spring clasp 650 of the second connector 620is biased to a hooked position before the first connector 610 isinserted into the second connector 620. For example, the spring clasp650 includes a spring element 654 arranged to maintain the spring clasp650 to be generally flush with a portion (e.g., a top surface) of thesecond connector 620 and bias the hook portion 652 toward the inside ofthe second connector 610 (e.g., toward the first connector 610 beinginserted into the second connector 610).

As illustrated in FIG. 9B, as the first connector 610 is inserted intothe second connector 620, the first connector 610 engages with thespring clasp 650 of the second connector 620 and pivots the spring clasp650 against the biasing force of the spring clasp 650. For example, asthe first connector 610 is inserted, the spring clasp 650 is in atransition position in which the hook portion 652 becomes to contactwith a surface of the first connector 610 and is raised against thebiasing force of the spring element 654. As illustrated in FIG. 9C, asthe first connector 610 is further inserted into the second connector620, the spring clasp 650 returns to the hooked position where thebiasing force of the spring element 654 causes the hook portion 652 ofthe spring clasp 650 to snap in the notch 651 defined on the firstconnector 610.

In addition or alternatively, the spring clasp 650 includes a releaseportion 656 that can be pushed to release the hook portion 652 of thespring clasp 650 from the notch 651 of the first connector 620 so thatthe first connector 610 can be removed from the second connector 620.The release portion 656 is arranged opposite to the hook portion 652with a pivot axis 658 of the spring clasp 650 arranged between the hookportion 652 and the release portion 656.

Referring to FIGS. 10A-10J, an example of the spring clasp 650 isfurther described. In particular, FIG. 10A is a side schematic view ofan example of the spring element 654, and FIG. 10B illustrates anexample arrangement of the spring element 654 in the spring clasp 650.As illustrated, the spring element 654 can be a coil spring having awinding part 662 with a first leg 664 and a second leg 666. The windingpart 662 can be arranged around a pivot pin 668. The first leg 664 canabut with a portion of the second connector 620, while the second leg666 can abut with a portion of the body 660 of spring clasp 650.

FIG. 10C is a side view of an example body 660 of the spring clasp 650,FIG. 10D is a top view of the body 660 of the spring clasp 650, and FIG.10E is a front view of the body 660 of the spring clasp 650. The body660 includes a pin hole 670 configured to receive the pivot pin 668 thatcan be fixed to a body of the second connector 620 so that the body 660of the spring clasp 650 rotates around the pivot pin 668. The body 660can include the hook portion 652 and the release portion 656 with thepin hole 670 arranged therebetween. The body 660 provides a springrecess 672 configured to at least partially receive and the springelement 654 in place.

Referring to FIG. 10J, which is a schematic top view of the spring clasp650 coupled to the second connector 620, the second connector 620includes an aperture 674 configured to receive the spring clasp 650. Thepivot pin 668 is attached to the body of the second connector 620 acrossthe aperture 674. The spring element 654 can be disposed around thepivot pin 668 with the first leg 664 extending and abutting with thebody of the second connector 620, and the second leg 666 abutting withthe body 660 adjacent the hook portion 652. The spring element 654 isconfigured to generate a force that biases the hook portion 652downwards (e.g., towards the notch 651 of the first connector 610).

FIG. 10F is a schematic front view of the spring clasp 650 in a hookposition, and FIG. 10G is a schematic rear view of the spring clasp 650in the hook position. When the first connector 610 is properly engagedwith the second connector 620, or when the first connector 610 is notinserted into the second connector 620, the hook portion 652 is loweredto a level sufficient to snap in the notch 651 of the first connector610 while the release portion 656 of the spring clasp 650 is raisedrelative to a position of the release portion 656 in a transitionposition in FIGS. 10H and 10I.

FIG. 10H is a schematic front view of the spring clasp 650 in atransition position, and FIG. 10I is a schematic rear view of the springclasp 650 in the transition position. As the first connector 610 isreceived into the second connector 620, the hook portion 652 is raisedagainst the biasing force of the spring element 654, and the releaseportion 656 is lowered relative to the position of the release portion656 in the hook position in FIGS. 10F and 10G.

FIGS. 11A-11I illustrate an example kyphoplasty procedure using thekyphoplasty system 100. Referring to FIG. 11A, a bone introducer needle702 is inserted into a compressed vertebral body 704 (e.g., thevertebral body 90). The bone introducer needle 702 can be used for thebone introducer needle 250 described herein. The bone introducer needle702 can have various sizes. In some implementations, the bone introducerneedle 702 can range from 5 gauge to 20 gauge. In other implementations,the bone introducer needle 702 is sized about 10 gauge.

The bone introducer needle 702 can be introduced with an inner stylette706. The stylette 706 can be inserted into the bone introducer needle702 to stiffen the bone introducer needle 702 and maintain its formwhile the bone introducer needle 702 is inserted into the vertebral body704. The stylette 706 can extend out from a distal end 714 of the boneintroducer needle 702.

The bone introducer needle 702 can be mounted to a first connector 710Aat a proximate end 711 of the bone introducer needle 702. The firstconnector 710A can be configured identically or similarly to the firstconnector 610, and the bone introducer needle 702 is an example of thefirst component 612, as described in FIG. 8 . In some implementations,the first connector 710A of the bone introducer needle 702 is coupled toa second connector (similar to the second connector 620 in FIG. 8 )which is part of a tool, such as a manual handle or a drill, so that thebone introducer needle 702 is introduced into a vertebral body bygripping and manipulating the tool.

Referring to FIG. 11B, a biopsy needle 718, which can be for bone biopsyor soft tissue biopsy, is coaxially introduced into the vertebral body704 through the bone introducer needle 702. The biopsy needle 718 isused to remove bone samples from the vertebral body. Such bone samplescan be examined to find out if cancer or other abnormal cells arepresent. The biopsy needle 718 can be mounted to a first connector 710Bat a proximate end. As such, the biopsy needle 718 is an example of afirst component 612 as described in FIG. 8 . The first connector 710Bcan be engaged with and secured in a second connector 720A. The secondconnector 720A can be part of, or connected to, a tool such as a manualhandle 730A (FIG. 11B) or an electronic drive tool 730B (FIG. 11C). Inthe illustrated example, the second connector 720A can be part of a tool730A (e.g., a manual handle). The second connector 720A can beconfigured identically or similarly to the second connector 620, asdescribed in FIG. 8 . In some implementations, the bone biopsy needle712 can range from 7 gauge to 20 gauge. In other implementations, thebone biopsy needle 712 is sized about 12 gauge. The biopsy needle 718mounted to the first connector 710B can be arranged and advancedcoaxially with the bone introducer needle 702 such that the firstconnector 710B of the biopsy needle 718 can be disposed behind the firstconnector 710A of the bone introducer needle 702. Because the firstconnector 710B of the biopsy needle 718 is secured to the secondconnector 720A of the tool 730A, the biopsy needle 718 can be controlledby manipulating the tool 730A.

The second connector 720A can be releasably coupled to the firstconnector 710B, as described with reference to FIG. 8 . The firstconnector 710B can be at least partially inserted into a cavity (e.g.,the cavity 624) of the second connector 720A and releasably coupled withthe second connector 720A using a lock mechanism 722A, such as thespring clasp 650. When the first connector 710B is coupled with thesecond connector 720A, the bone biopsy needle 712 passes through thebone introducer needle 702 with a distal end of the bone biopsy needle712 extending out from the distal end 714 of the bone introducer needle702.

Referring to FIG. 11C, a bone drill bit 740 is coaxially introduced intothe vertebral body 704 through the bone introducer needle 702. The bonedrill bit 740 is used to create a cavity in the vertebral body. The bonedrill bit 740 can be mounted to a first connector 710C at a proximateend. As such, the bone drill bit 740 is an example of a first component612, as described in FIG. 8 . The first connector 710C can be engagedwith and secured in a second connector 720B which can be part of, orconnected to a tool such as the manual handle 730A (FIG. 11B) or theelectronic drive tool 730B (FIG. 11C). In the illustrated example, thesecond connector 720B is connected to the electronic drive tool 730B.The second connector 720B can be configured as the second connector 620,as described in FIG. 8 . In some implementations, the bone drill bit 740can range from 7 gauge to 20 gauge. In other implementations, the bonedrill bit 740 is sized about 12 gauge. The bone drill bit 740 mounted tothe first connector 710C can be arranged and advanced coaxially with thebone introducer needle 702 such that the first connector 710C of thebone drill bit 740 can be disposed behind the first connector 710A ofthe bone introducer needle 702. Because the first connector 710C of thebone drill bit 740 is secured to the second connector 720B of the tool730B, the bone drill bit 740 can be operated by controlling the tool730B.

The second connector 720B of the bone drill bit 740 can be releasablycoupled to the first connector 710C, as described with reference to FIG.8 . The first connector 710C can be at least partially inserted into acavity (e.g., the cavity 624) of the second connector 720B andreleasably coupled with the second connector 720B using a lock mechanism722B, such as the spring clasp 650. When the first connector 710C iscoupled with the second connector 720B, the bone drill bit 740 passesthrough the bone introducer needle 702 with a distal end of the bonedrill bit 740 extending out from the distal end 714 of the boneintroducer needle 702.

The tool 730B can fix or mount the second connector 720A so that thebone drill bit 740 can be operated by the tool 730B handled by a user.For example, the tool 730B can be a powered or manual handheld tool(e.g., a drill) configured to attach a variety of instruments and spinthem about their axis. The tool 730B can include a coupling feature 732configured to detachably mount the second connector 720B. Examples ofthe coupling feature 732 include a socket 734 to fit the secondconnector 720B. The socket 734 can be configured to be complementary toan exterior shape of the second connector 720B, so that the secondconnector 720B can be prevented from rotating relative to the drill whenthe second connector 720B is received within the socket of the drill. Inaddition or alternatively, the coupling feature 732 can include a chuckoperable to hold the second connector 720B. In some implementations, anadapter can be provided to be disposed between the second connector 720Band the socket 734, for example when the exterior shape of the secondconnector 720B is not complementary to the interior shape of the socket734. In addition or alternatively, other types of fasteners, such asscrews, clips, clamps, adhesives, magnets, etc., can be used to mountthe second connector 720A to the drill.

Referring to FIG. 11D, a cavity curette 744 is introduced into thevertebral body 704 through the bone introducer needle 702. The cavitycurette 744 is used to remove (e.g., scrape and/or debride) debris in acavity (e.g., the cavity created by a bone drill) created in thevertebral body. The cavity curette 744 can be mounted to a firstconnector 710D at a proximate end. As such, the cavity curette 744 is anexample of a first component 612, as described in FIG. 8 . The firstconnector 710D can be engaged with and secured in a second connector720C which can be part of a tool, such as the tool 730A or 730B. Thesecond connector 720C can be configured as the second connector 620, asdescribed in FIG. 8 . In some implementations, the cavity curette 744can range from 7 gauge to 20 gauge. In other implementations, the cavitycurette 744 is sized about 12 gauge. The cavity curette 744 mounted tothe first connector 710D can be arranged and advanced coaxially with thebone introducer needle 702 such that such that the first connector 710Dof the cavity curette 744 can be disposed behind the first connector710A of the bone introducer needle 702. Because the first connector 710Dof the cavity curette 744 is secured to the second connector 720C of atool (e.g., the tool 730A or 730B), the cavity curette 744 can beoperated by controlling the tool 730.

The second connector 720C of the cavity curette 744 releasably coupledto the first connector 710D, as described with reference to FIG. 8 . Thefirst connector 710D can be at least partially inserted into a cavity(e.g., the cavity 624) of the second connector 720C and releasablycoupled with the second connector 720C using a lock mechanism 722C, suchas the spring clasp 650. When the first connector 710D is coupled withthe second connector 720C, the cavity curette 744 passes through thebone introducer needle 702 with a distal end of the cavity curette 744extending out from the distal end 714 of the bone introducer needle 702.

Referring to FIG. 11E, the kyphoplasty apparatus 110 is coaxiallyintroduced into the vertebral body 704 through the bone introducerneedle 702. As described herein, the kyphoplasty apparatus 110 caninclude the multi-functionality head 200 and the shaft 202 detachablycoupled to the multi-functionality head 200. A proximate end (e.g., theproximate end 212) of the shaft 202 can be mounted to a first connector710E. As such, the shaft 202 (with the multi-functionality head 200) isan example of the second component, as described in FIG. 8 . The firstconnector 710E can be engaged with and secured in a second connector720D which is part of a tool, such as the tool 730A or 730B. The secondconnector 720D can be configured as the second connector 620, asdescribed in FIG. 8 . In some implementations, the shaft 202 and/or themulti-functionality head 200 can range from 7 gauge to 20 gauge. Inother implementations, the shaft 202 and/or the multi-functionality head200 are sized about 12 gauge. The shaft 202 mounted to the firstconnector 710E can be arranged and advanced coaxially with the boneintroducer needle 702 such that the first connector 710E of the shaft202 can be disposed behind the first connector 710A of the boneintroducer needle 702. Because the first connector 710E of the shaft 202is secured to the second connector 720D of a tool, the shaft 202 withthe multi-functionality head 200 can be inserted and manipulated byhandling the tool.

The second connector 720D of the kyphoplasty apparatus 110 can bereleasably coupled to the first connector 710E, as described withreference to FIG. 8 . The first connector 710E can be at least partiallyinserted into a cavity (e.g., the cavity 624) of the second connector720D and releasably coupled with the second connector 720D using a lockmechanism 722D, such as the spring clasp 650. When the first connector710E is coupled with the second connector 720D, the kyphoplastyapparatus 110 passes through the bone introducer needle 702 with themulti-functionality head 200 and/or a distal end of the shaft 202extending out from the distal end 714 of the bone introducer needle 702.

Referring to FIG. 11F, a balloon inflation fluid 760 (e.g., the balloonfluid 264) is delivered through the shaft 202 and themulti-functionality head 200 into the balloon device 262 and fill in theballoon device 262, thereby inflating the balloon device 262. Theinflated balloon device 262 can restore a height of the vertebral body704 (e.g., from H1 as shown in FIG. 11F to H2 as shown in FIG. 11G). Asalso described in FIG. 5 , the balloon inflation fluid 760 can bedelivered through the balloon fluid channel 222 of the shaft 202 and thefirst conduit 276 of the multi-functionality head 200. In someimplementations, the filler needle 221 is introduced through the bonefiller channel 220 of the shaft 202 and the second conduit 278 of themulti-functionality head 200 so that a bone filler can be injectedthrough the filler needle 221 (FIG. 11G). The shaft 202 can be connectedto a balloon fluid source through a connector 762 having a port 764being fluid communication with the balloon fluid source. The connector762 can be disposed behind the first connector 710A of the boneintroducer needle 702.

Referring to FIG. 11G, once the balloon device 262 is inflated with theballoon inflation fluid 760, a bone filler 766 (e.g., the bone filler266) is delivered through the shaft 202 or the filler needle 221introduced through the shaft 202, and then through themulti-functionality head 200 into the vertebral body 704. As also shownin FIG. 6 , once the balloon device 262 has been inflated, the bonefiller 765 can be injected into, and fill in, the vertebral body 704through the bone filler channel 220 of the shaft 202 and the secondconduit 278 of the multi-functionality head 200.

The shaft 202 can be connected to a bone filler source through aconnector 768 having a port 770 being fluid communication with theballoon fluid source. In some implementations, the connector 768 can bethe connector 762 in FIG. 11F which may be configured to permit for theballoon fluid and the bone filler to be delivered therethoughselectively. For example, either or both of the connectors 762, 768 canbe configured to selectively supply a balloon inflation fluid and a bonefiller through the shaft 202 of the kyphoplasty apparatus 110. Theconnectors 762, 768 can be fluidly connected to the bone filler source230 (and the actuator 232) and the balloon fluid source 240 (and theballoon controller 242) as described with reference to FIG. 2 . Theconnectors 762, 768 can be configured as a single device that is influid communication with both the bone filler source 230 (and theactuator 232) and the balloon fluid source 240 (and the ballooncontroller 242). Alternatively, the connector 762 can be configuredsolely for delivery of a balloon inflation fluid and fluidly connectedto the balloon fluid source 240 (and the balloon controller 242). Theconnector 768 can be configured solely for delivery of a bone filler andfluidly connected to the bone filler source 230 (and the actuator 232).

Referring to FIG. 11H, once the bone filler 766 at least partially fillin the vertebral body 704, the shaft 202 is removed from the vertebralbody 704. As also described in FIG. 7 , the shaft 202 can be removedfrom the multi-functionality head 200 by unscrewing the distal end 210of the shaft 202 from the threaded portion 277 of body 260 of themulti-functionality head 200.

Referring to FIG. 11I, the bone introducer needle 702 is removed fromthe restored vertebral body 704. The restored shape of the vertebralbody 704 can be maintained by the inflated balloon device 262 of themulti-functionality head 200, as well as the bone filler that fills thevertebral body 704.

Referring to FIGS. 12A-12D, 13A-13D, 14A-14D, and 15A-15D, thekyphoplasty apparatus 110 can have various configurations. FIGS. 12A-12Dillustrate an example configuration of the kyphoplasty apparatus 110that includes a single multi-functionality head 200 with a sphericalballoon (or similar shape) when inflated. As described herein, amulti-functionality head 200 with a deflated balloon device 262A isinserted into a vertebral body 704 (FIG. 12A), and a balloon inflationfluid 760 is delivered through a shaft 202 and inflates the balloondevice 262A to the spherical shape, thereby restoring the vertebral body704 to a desired height H2 (FIG. 12B). Once the balloon is inflated to adesired shape, a bone filler 766 is delivered through the shaft 202 andinto the vertebral body 704 to fill the restored space of the vertebralbody 704 (FIG. 12C). Then, the shaft 202 is decoupled from themulti-functionality head 200 and withdrawn from the vertebral body 704(FIG. 12D).

FIGS. 13A-13D illustrate another example configuration of thekyphoplasty apparatus 110 that includes a set of multi-functionalityheads 200 with a spherical balloon (or similar shape) when inflated. Asdescribed herein, a set of multi-functionality heads 200 with deflatedballoon devices 262B is inserted into a vertebral body 704 (FIG. 13A),and a balloon inflation fluid 760 is delivered through the shafts 202and inflates the balloon devices 262B to the spherical shape, therebyrestoring the vertebral body 704 to a desired height (FIG. 13B). Theballoon devices 262B can be simultaneously inflated, or inflated withtime shift. Once the balloons are inflated to a desired shape, a bonefiller 766 is delivered through the shafts 202 and into the vertebralbody 704 to fill the restored space of the vertebral body 704 (FIG.13C). The bone fillers 766 can be simultaneously supplied, or suppliedwith time shift. Then, the shafts 202 are decoupled from themulti-functionality heads 200 and withdrawn from the vertebral body 704(FIG. 13D).

FIGS. 14A-14D illustrate an example configuration of the kyphoplastyapparatus 110 that includes a single multi-functionality head 200 with acubic balloon (or similar shape) when inflated. As described herein, amulti-functionality head 200 with a deflated balloon device 262C isinserted into a vertebral body 704 (FIG. 14A), and a balloon inflationfluid 760 is delivered through a shaft 202 and inflates the balloondevice 262C to the cubic shape, thereby restoring the vertebral body 704to a desired height H2 (FIG. 14B). Once the balloon is inflated to adesired shape, a bone filler 766 is delivered through the shaft 202 andinto the vertebral body 704 to fill the restored space of the vertebralbody 704 (FIG. 14C). Then, the shaft 202 is decoupled from themulti-functionality head 200 and withdrawn from the vertebral body 704(FIG. 14D).

FIGS. 15A-15D illustrate another example configuration of thekyphoplasty apparatus 110 that includes a set of multi-functionalityheads 200 with a prism or diamond balloon (or similar shape) wheninflated. As described herein, a set of multi-functionality heads 200with deflated balloon devices 262D is inserted into a vertebral body 704(FIG. 15A), and a balloon inflation fluid 760 is delivered through theshafts 202 and inflates the balloon devices 262D to the prism or diamondshape, thereby restoring the vertebral body 704 to a desired height(FIG. 15B). The balloon devices 262D can be simultaneously inflated, orinflated with time shift. Once the balloons are inflated to a desiredshape, a bone filler 766 is delivered through the shafts 202 and intothe vertebral body 704 to fill the restored space of the vertebral body704 (FIG. 15C). The bone fillers 766 can be simultaneously supplied, orsupplied with time shift. Then, the shafts 202 are decoupled from themulti-functionality heads 200 and withdrawn from the vertebral body 704(FIG. 15D).

FIG. 16 illustrates an example instrument length extension device 800for the connection system 600. The instrument length extension device800 is configured to extend a length of an instrument used with theconnection system 600. The instrument length extension device 800includes an extension shaft 802 having a first end 804 and an oppositesecond end 806. The instrument length extension device 800 can include afirst extension connector 810 mounted to the first end 804 of theextension shaft 802. In addition or alternatively, the instrument lengthextension device 800 can include a second extension connector 820mounted to the second end 806 of the extension shaft 802. The instrumentlength extension device 800 has a channel 808 extending through a lengthof the device and being open at the opposite ends of the device.

The first extension connector 810 is configured identical or similar tothe first connector 610 (including the first connector 710) andconfigured to engage with the second connector 620 (including the secondconnectors 720A-D) of the connection system 600. For example, the firstextension connector 810 is dimensioned identically to the firstconnector 610 of the connection system 600, and includes a notch 812identical to the notch 651 of the first connector 610. Similarly to thefirst connector 610, the first extension connector 810 can be at leastpartially inserted to, and coupled with, the second connector 620 of theconnection system 600 that is attached to a second component (e.g., thebiopsy needle 718 mounted with the first connector (FIG. 11B), the bonedrill bit 740 mounted to the first connector (FIG. 11C), or the shaft202 mounted to the first connector (FIG. 11E)). As the first extensionconnector 810 is coupled with the second connector 620, the secondcomponent mounting the second connector 620 is inserted through theextension shaft 802 and extends out from the other end of the extensionshaft 802 (e.g., the second extension connector 820 attached to thesecond end 806 of the extension shaft 802).

The second extension connector 820 is configured identical or similar tothe second connector 620 (including the second connectors 720A-D) andconfigured to engage with the first connector 610 (including the firstconnector 710) of the connection system 600. For example, the secondextension connector 820 is dimensioned identically to the secondconnector 620 of the connection system 600, and includes a spring clasp822 identical to the spring clasp 650 of the second connector 620.Similarly to the second connector 620, the second extension connector820 can be at least partially receive and couple the first connector 610of the connection system 600. When the first extension connector 810 andthe second extension connector 820 are coupled with the second connector620 and the first connector 610 of the connection system 600,respectively, the second component extending from the second connector620 passes through the extension shaft 802 and continues to extendthrough the first component 612 (e.g., the bone introducer needle 702).As such, the instrument length extension device 800 can effectivelyextend a length of the first component 612 by simply coupling the secondextension connector 820 of the extension device 800 to the firstconnector 610 of the first component 612, and by simply coupling thefirst extension connector 810 of the extension device 800 to the secondconnector 620 of the second component.

The instrument length extension device 800 can be configured to havevarious lengths by having different lengths of the extension shaft 802.In some implementations, the length of the instrument length extensiondevice 800 can range from 2 cm to 20 cm. In other implementations, thelength of the instrument length extension device 800 can be 10 cm.

FIG. 17 illustrates an example instrument spacer 850 for the connectionsystem 600. The instrument spacer 850 is configured to control a lengthof a second component 622 being inserted through the first component 612(e.g., the bone introducer needle 702) into a vertebral body.

The instrument spacer 850 can be configured as a sleeve 852 with apredetermined axial length L. The instrument spacer 850 can be slidaround the second component 622 (e.g., a bone biopsy needle, a drillbit, etc.) before the second component 622 is inserted into the firstcomponent 612 (e.g., a bone introducer needle). The instrument spacer850 can be slidably positioned around the second component 622 andarranged between the first connector 610 and the second connector 620.As the second component 622 moves toward a vertebral body, theinstrument spacer 850 can limit an axial movement of the secondcomponent 622 relative to the first component 612. For example, theinstrument spacer 850 can stop the second component 622 from movingfurther axially when engaging with the first connector 610 at one axialend and with the second connector 620 at the opposite axial end.

The connection system 600 can provide a set of multiple instrumentspacers 850 having different axial lengths to adjust a length of thesecond component 622 (e.g., a drill bit) which extends out from thedistal end of the first component 612 (e.g., a bone introducer needle)within a vertebral body. By way of example, where an exposed length of adrill bit is 3 cm without using a spacer, a first spacer 850 having 2 cmaxial length can be used to make the exposed length of the drill bit tobe 1 cm within a vertebral body, and a second spacer 850 having 1 cmaxial length can be used to make the exposed length of the drill bit tobe 2 cm within the vertebral body.

Referring to FIGS. 18A-18D, an example patient positioning mat 900 isdescribed. The patient positioning mat 900 is configured to allow apatient to comfortably lie flat and prone during kyphoplasty and otherprocedures which require patients to remain in a prone position. Thepositioning mat 900 is configured to be placed on any suitable type ofexisting tables and beds.

The positioning mat 900 can be configured to be foldable for convenientstorage and transportation between different rooms. For example, thepositioning mat 900 has a plurality of sections 906 connected at foldinglines 908 along which the sections 906 can be folded. The positioningmat 900 can be made of a deformable material to conform the patient'sbody in a prone position. In addition or alternatively, the positioningmat 900 can be made of a lightweight material to make it portable.

The positioning mat 900 includes a body portion 902 and a head portion904 connected to the body portion 902. The body portion 902 isconfigured to support at least a portion of a patient's trunk (e.g.,torso). The body portion 902 can be configured to further support lowerlimbs (e.g., legs) of the patient. The body portion 902 can be shaped toergonomically support the body. For example, the body portion 902 canhave a curved portion 922 arranged to support a desired portion of thepatient's body in a prone position.

The head portion 904 extends from the body portion 902 and is configuredto support a patient's head. The head portion 904 includes a rim portion910 that at least partially defines an opening 912 for exposing at leasta portion of the patient's face (including eyes, nose, and mouth) whilesupporting the patient's head when the patient lies in a face-downposition. The head portion 904 includes a vertical support portion 914configured to position the rim portion 910 away from a bottom level G(e.g., a table or bed surface) on which the positioning mat 900 is set.The vertical support portion 914 can provide a space between the rimportion 910 and the bottom level G so that the patient's face does nottouch the bottom level G and is sufficiently raised from the bottomlevel G. The vertical support portion 914 can be configured to beadjustable in length. For example, the vertical support portion 914 canbe configured to be telescopically expandable and retractable so thatthe height of the head portion 904 is adjusted.

The head portion 904 can include one or more tube notches 916 configuredto route one or more tubes 918 (e.g., oxygen tubes) around the patient'shead H during procedures. As illustrated in FIG. 18A, the tube notches916 can be provided in the rim portion 910 and adjacent the opening 912.The head portion 904 includes one or more vent openings 920 providedbelow the rim portion 910 and configured to allow air to flow throughthe vent openings 920, thereby helping the patient to breath duringprocedures.

Referring to FIGS. 19A-19C, an example introducer needle 940 isdescribed. In particular, FIG. 19A is a side view of an exampleintroducer needle 940, and FIG. 19B is a top view of the introducerneedle 940. FIG. 19C is a schematic side cross sectional view of theintroducer needle 940 engaging an example biopsy device. The introducerneedle 940 can be used for the bone introducer needle 702 described inFIG. 11A.

The introducer needle 940 can include a backflow prevention device 942.The backflow prevention device 942 can include a one-way valve 944configured to prevent backflow of blood or body fluids. For example, thebackflow prevention device 942 can prevent blood or body fluids fromflowing in a direction away from a patient's body when an instrument(e.g., a biopsy needle, a drill, etc.) is removed from the patient'sbody through the introducer needle 940.

The introducer needle 940 can include a needle 946 and a hub 948connected to an end of the needle 946. The hub 948 defines an interiorspace being in fluid communication with a canal of the needle 946, andfurther includes the backflow prevention device 942 (e.g., the one-wayvalve 944) arranged within the interior space of the hub 948. Theone-way valve 944 can be made of a flexible material, such as silicone,rubber, etc.

As illustrated in FIG. 19C, a biopsy device 950, which can be used forsoft tissue biopsy or bone biopsy, can be inserted into the introducerneedle 940. When the biopsy device 950 is inserted to the introducerneedle 940, a biopsy gun 952 of the biopsy device 950 is partiallyinserted to the hub 948 of the introducer needle 940, and a biopsyneedle 954 is inserted through the needle 946 of the introducer needle940. Further, the biopsy device 950 opens the one-way valve 944 of theintroducer needle 940. As the biopsy device 950 is removed from theintroducer needle 940, the one-way valve 944 is closed to preventbackflow of any fluid from the patient's body. In some implementations,the introducer needle 940 can have a size ranging between 16 gauge and18 gauge, and the biopsy device 950 can have a size ranging between 18gauge and 20 gauge.

In addition, the hub 948 can provides a coupling structure 949 fordetachably engaging an instrument (e.g., a biopsy device, a drill,etc.). An example of the coupling structure 949 includes a luer lock, aflange, or other types of fasteners.

FIG. 20 is a schematic side cross sectional view of an example biopsydevice 960. The biopsy device 960 can be engageable with various typesof introducer needles although it is primarily illustrated and describedto be used with the introducer needle 940 of FIGS. 19A-19C.

The biopsy device 960 can be configured to be similar to the biopsydevice 950 except for a locking feature. Similarly to the biopsy device950, the biopsy device 960 includes a biopsy gun 962 and a biopsy needle964. The biopsy device 960 is configured to be coupled with anintroducer needle without an additional locking device. For example, asillustrated in FIG. 20 , the introducer needle 940 includes the hub 948with a female luer lock connector 966, and the biopsy gun 962 of thebiopsy device 960 includes a male luer lock connector 968. As the biopsydevice 960 is at least partially inserted into the hub 948 of theintroducer needle 940, the male luer lock connector 968 of the biopsydevice 960 can be engaged with the female luer lock connector 966 of thehub 948, thereby securing the biopsy gun 962 to the hub 948 of theintroducer needle 940 without a separate luer lock ring or otheradditional elements. The male luer lock connector 968 can be formedintegrally with the biopsy gun 962. Alternatively, the male luer lockconnector 968 can be made separately and fixed to the biopsy gun 962.

Referring to FIGS. 21-24, 25A-25C, and 26A-26C, an exampleradiation-free interventional spinal training system 1000 is described.

FIG. 21 is a schematic perspective view of an example interventionalspinal training system 1000, which can be used in a training environment104 as illustrated in FIG. 1 . FIG. 22 is a side cross sectional view ofthe training system 1000 of FIG. 21 , and FIG. 23 is a top view of thetraining system 1000 of FIG. 1 . The training system 1000 can beconfigured for kyphoplasty and other interventional procedures. Thetraining system 1000 can include one or more individual vertebral bodymodels 1002, a spinal canal model 1004, and a patient body model 1008.

The vertebral body models 1002 (e.g., chunks, blocks, pieces, etc.) canbe configured to simulate vertebral bodies, as illustrated in FIG.25A-25C. The vertebral body models 1002 can be made similarly to theshape and/or size of actual vertebral bodies. Other outer shapes, suchas sphere, cones, cylinders, cubes, rectangular prisms, and otherprisms, are also possible. The vertebral body models 1002 can be made ofa material that is penetrable by needles, such as silicone. Thevertebral body models 1002 can be made to be transparent so as tovisualize instruments, elements, and substances inserted into themodels, such as kyphoplasty needles, balloons, balloon fluids, and bonefillers inside the models. In addition or alternatively, the vertebralbody models 1002 can be configured to make an outside part (e.g., crust)harder than an inside part, thereby simulating tactile experience oftouching needles to spinal bones.

As illustrated in FIG. 25A-25C, the vertebral body models 1002 caninclude markers 1012 indicative of educational anatomic landmarks tofacilitate correct needle placement. Example shapes of markers caninclude lines, dots, circles, symbols, and other suitable objects. Themarkers 1012 can be provided to the vertebral body models 1002 invarious manners. For example, the markers 1010 can be engraved and/orpainted on the vertebral body models 1002.

Referring also to FIG. 24 , the training system 1000 can include aspinal canal model 1004 configured to connect the vertebral body models1002, thereby simulating a spinal canal with vertebral bodies. Thespinal canal model 1004 can include a rod 1005 configured to engage aseries of vertebral body models 1002. The spinal canal model 1004 can beconfigured to allow the vertebral body models 1002 to be individuallyengaged with and removed from the spinal canal model 1004. Each of thevertebral body models 1002 can be replaced if damaged during simulatedprocedure. For example, a damaged vertebral body 1002A is removed fromthe spinal canal model 1004 and a new vertebral body 1002B is engagedwith the spinal canal model 1004 to replace the removed vertebral body1002A.

The spinal canal model 1004 can be configured to rest on a table top orother surface in the training environment 104. For example, the spinalcanal model 1004 includes stands 1006 mounted to the opposite ends ofthe spinal canal model and configured to be seated on a surface tosupport the vertebral body models 1002 above the surface. The spinalcanal model 1004 can be made of a transparent material to allowvisualization of bone needles inside a vertebral bone.

Referring to FIGS. 21-23 , the training system 1000 can include apatient body model 1008 that simulates a patient body. The patient bodymodel 1008 can be made of a transparent material (e.g., silicone) toallow visualization of needles approaching the vertebral body models1002. The patient body model 1008 can be configured to be placed overthe spinal canal model 1004 engaging one or more vertebral body models1002, and rest on the rest top on which the spinal canal model 1004 alsorests. For example, the patient body model 1008 can include a tunnel1009 to receive the spinal canal model 1004 engaging one or morevertebral body models 1002. The patient body model 1008 can be ofvarious shapes, such as a half-cylindrical outer shape. The patient bodymodel 1008 can have a flat bottom configured to rest on a surface, asillustrated in FIG. 21 . The patient body model 1008 can be made of amaterial that is penetrable by needles and provides tactile simulationof advancing needles through paraspinal soft tissues.

Referring to FIGS. 26A-26C, the training system 1000 can include acamera support device 1100 configured to simulate a C-arm machine ofkyphoplasty or other procedures. The camera support device 1100 isconfigured to movably support an image capturing device 1102 withrespect to the patient body model 1008 and/or the spinal canal model1004 engaging with the vertebral body models 1002.

The camera support device 1100 can include a rail frame 1104 extendingaround the patient body model 1008. The rail frame 1104 can be shaped tobe arc around the patient body model 1008. Other shapes of the railframe 1104 are also possible, such as rectangle, square, etc. The railframe 1104 can be supported by bases 1108 mounted to the ends of therail frame 1104. The bases 1108 can be configured to rest on a surface,such as a table top.

The camera support device 1100 can include a camera bracket 1106slidably engaged with the rail frame 1104 and configured to mount animage capturing device 1102 capable of capturing videos and/or stillimages. Examples of the image capturing device 1102 include a digitalcamera, a mobile device (e.g., a smartphone, a tablet, etc.) including adigital camera, and other image capturing devices.

The camera bracket 1106 is configured to slide along the rail frame 1104(e.g., along a direction D1) above the patient body model 1008 whilecapturing images (e.g., still images and/or video images) of trainingprocedures with the patient body model 1008, the spinal canal model1004, and/or the vertebral body models 1002. The images taken by theimage capturing device 1102 can be transmitted to a display device(e.g., the display device 182 in FIG. 1 ) and displayed on the displaydevice so that users (e.g., trainers and trainees T in FIG. 1 ) canwatch the procedures in real-time as they perform the procedures, justas physicians (e.g., the physician P in FIG. 1 ) can monitor a surgicalsite (e.g., the inside of a vertebral body) through a C-arm system(e.g., the image scanner 180 in FIG. 1 ) during the procedure (e.g., inthe surgical theater 102).

Referring to FIG. 24C, the rail frame 1104 of the camera support device1100 can be configured to be pivotable in a cranial-caudal plane (alonga direction D2), just as a C-arm system is maneuvered duringinterventional spine procedures. For example, the rail frame 1104 ispivotally connected to the bases 1108 so as to rotate around a pivotaxis 1110.

Referring to FIG. 26B, the camera support device 1100 can be configuredto be movable along a cranial-caudal direction (e.g., a direction D3).For example, the bases 1108 can be configured to move along thedirection D3 so that the rail frame 1104 mounting the image capturingdevice 1102 is entirely moved along the direction D3. Alternatively, thebases 1108 and the rail frame 1104 coupled thereto can remainstationary, and the spinal canal model 1004 (including the vertebralbody models 1002) and/or the patient body model 1008 can be movedrelative to the camera support device 1100 in the direction D3.

The camera support device 1100 can be manually and/or remotelycontrolled to move in different planes of movement. For example, thecamera bracket 1106 can be manually moved along the rail frame 1104,and/or the rail frame 1104 can be manually pivoted relative to the bases1108. Alternatively or in addition, the camera bracket 1106 and/or therail frame 1104 are connected to a controller that provides a userinterface (e.g., buttons, joysticks, etc.), and a user can control themovements of the camera bracket 1106 and/or the rail frame 1104 usingthe user interface. The controller can be of various types, such as aremote controller or a software program (e.g., a mobile application)running on a remote computing device. The camera support device 1100 canbe connected to the controller using wireless and/or wiredcommunications interface.

While this specification contains many specific implementation details,these should not be construed as limitations on the scope of thedisclosed technology or of what may be claimed, but rather asdescriptions of features that may be specific to particular embodimentsof particular disclosed technologies. Certain features that aredescribed in this specification in the context of separate embodimentscan also be implemented in combination in a single embodiment in part orin whole. Conversely, various features that are described in the contextof a single embodiment can also be implemented in multiple embodimentsseparately or in any suitable subcombination. Moreover, althoughfeatures may be described herein as acting in certain combinationsand/or initially claimed as such, one or more features from a claimedcombination can in some cases be excised from the combination, and theclaimed combination may be directed to a subcombination or variation ofa subcombination. Similarly, while operations may be described in aparticular order, this should not be understood as requiring that suchoperations be performed in the particular order or in sequential order,or that all operations be performed, to achieve desirable results.Particular embodiments of the subject matter have been described. Otherembodiments are within the scope of the following claims.

What is claimed is:
 1. A system for an interventional surgicalprocedure, comprising: a surgical instrument; a user tool configured tocontrol the surgical instrument; a first connector including: a firstbody attached to a proximal end of the surgical instrument and having anexterior polygonal prism shape; and a notch provided in the first body;and a second connector including: a second body attached to a distal endof the user tool and including a longitudinal cavity having an interiorpolygonal prism shape that is configured to matingly receive at least aportion of the exterior polygonal prism shape of the first body of thefirst connector, wherein the second body has a lateral width that isgreater than a maximum lateral width of the first body; and a springclasp provided in the second body and configured to releasably engagewith the notch of the first body when the second body receives the firstbody.
 2. The system of claim 1, wherein the spring clasp comprises: ahook portion configured to snap in the notch of the first body of thefirst connector; a spring element arranged to bias the spring clasp to ahooked portion in which the hook portion snaps in the notch of the firstbody of the first connector when the first connector is received in thecavity of the second body; a release portion configured to release thehook portion from the notch, wherein the spring clasp is pivotallycoupled to the second body, the release portion being arranged oppositeto the hook portion with a pivot axis of the spring clasp therebetween.3. The system of claim 1, wherein the second body of the secondconnector is configured to be fixed or releasably attached to the usertool having a manual grip.
 4. The system of claim 1, wherein the secondbody of the second connector is configured to be fixed or releasablyattached to the user tool that comprises an electric driving tool havinga socket configured to fit the second body of the second connector. 5.The system of claim 1, wherein the surgical instrument is one of anintroducer needle, a bone biopsy needle, a bone drill, a curette, and akyphoplasty apparatus.
 6. The system of claim 5, wherein the surgicalinstrument is the kyphoplasty apparatus comprising: amulti-functionality head including: a body including a first conduit anda second conduit; and an inflatable balloon device attached to the bodyand configured to be in fluid communication with the first conduit ofthe body.
 7. The system of claim 6, wherein the kyphoplasty apparatusincludes: an elongate shaft having a distal end and a proximate end, theshaft configured to detachably attach the body of themulti-functionality head at the distal end, the shaft including: a bonefiller channel configured to be in fluid communication with the secondconduit of the multi-functionality head and deliver a bone filler into avertebral body through the second conduit; and a balloon fluid channelconfigured to be in fluid communication with the first conduit of themulti-functionality head and deliver a balloon fluid into the balloondevice through the first conduit to inflate the balloon device withinthe vertebral body.
 8. The system of claim 7, wherein the body isconfigured to snap-fit the distal end of the shaft.
 9. The system ofclaim 7, wherein the second conduit extends through a length of thebody, and the first conduit is arranged around the second conduit. 10.The system of claim 7, wherein the balloon device is attached to anexterior surface of the body.
 11. The system of claim 7, wherein theballoon fluid channel is arranged around the bone filler channel. 12.The system of claim 7, wherein the proximate end of the shaft isconfigured to fluidly connect to a bone filler source and a balloonfluid source, the bone filler source configured to be in fluidcommunication with the bone filler channel, and the balloon fluid sourceconfigured to be in fluid communication with the balloon fluid channel.13. The system of claim 7, wherein the multi-functionality head furthercomprises: a first valve disposed in the first conduit and configured toprevent a backflow of the balloon fluid, wherein the first valve is aconical one-way valve; a balloon port configured to make fluidcommunication between the first conduit and the balloon device; and asecond valve configured to selectively open and close the balloon portand prevent a backflow of the balloon fluid through the balloon port,wherein the second valve includes at least one of a one-way flap valveor a one-way sleeve valve.
 14. The system of claim 6, wherein themulti-functionality head includes a spring-biased footplate configuredto be pressed against an inner surface of the bone introducer needle.15. A system for an interventional surgical procedure, comprising: afirst connector including: a first body attached to a surgicalinstrument; and a notch provided in the first body; and a secondconnector including: a second body attached to a driving tool andincluding a cavity configured to receive at least partially the firstbody of the first connector; a spring clasp provided in the second bodyand configured to releasably engage with the notch of the first bodywhen the second body receives the first body; an instrument lengthextension device configured to engage between the first connector andthe second connector, the instrument length extension device including:an extension shaft; a first extension connector mounted to a first endof the extension shaft and configured to be at least partially insertedinto the cavity of the second body of the second connector; and a secondextension connector mounted to a second end of the extension shaft andconfigured to at least partially receive the first body of the firstconnector.
 16. The system of claim 15, wherein the first extensionconnector comprises: a first extension body including a passage fluidlyconnected to the channel of the extension shaft; and a notch provided inthe first extension body and configured to engage with the spring claspof the second connector.
 17. The system of claim 15, wherein the secondextension connector includes: a second extension body including a portfluidly connected to the channel of the extension shaft and furtherincluding an extension cavity configured to receive at least partiallythe first body of the first connector; and a spring clasp provided inthe second extension body and configured to releasably engage with thenotch of the first connector when the second extension body receives thefirst body of the first connector.
 18. A system for an interventionalsurgical procedure, comprising: a first connector including: a firstbody attached to a surgical instrument; and a notch provided in thefirst body; and a second connector including: a second body attached toa driving tool and including a cavity configured to receive at leastpartially the first body of the first connector; a spring clasp providedin the second body and configured to releasably engage with the notch ofthe first body when the second body receives the first body; aninstrument spacer configured to be slid around an inner instrument, theinner instrument mounting a third connector and configured to extendthrough the surgical instrument with the third connector disposed behindthe first connector of the surgical instrument, the instrument spacerdisposed between the first connector and the third connector, whereinthe instrument spacer includes a sleeve, and wherein the third connectoris configured to engage with the second connector.
 19. A system for aninterventional surgical procedure, comprising: a first connectorincluding: a first body attached to a surgical instrument; and a notchprovided in the first body; and a second connector including: a secondbody attached to a driving tool and including a cavity configured toreceive at least partially the first body of the first connector; aspring clasp provided in the second body and configured to releasablyengage with the notch of the first body when the second body receivesthe first body; a set of instrument spacers having different axiallengths, each instrument spacer configured to be slid around an innerinstrument, the inner instrument mounting a third connector andconfigured to extend through the surgical instrument with the thirdconnector disposed behind the first connector of the surgicalinstrument, the instrument spacer disposed between the first connectorand the third connector.
 20. The system of claim 19, wherein theinstrument spacer includes a sleeve.